Last Updated: August 22, 2026
Oona Gray Seppala is best known as the eldest daughter of Suits actress Sarah Rafferty and finance professional Santtu Seppälä. Unlike many children of well-known actors, she has not developed a highly visible entertainment career or public celebrity brand of her own.
That limited public profile has created plenty of curiosity. Readers commonly search for her age, parents, sister, childhood, education, Instagram, career and net worth, yet many online biographies provide more detail than strong public sources actually support.
This guide takes an evidence-first approach to her story, separating documented facts from assumptions and repeated celebrity-bio claims that remain difficult to verify.
Quick Answer: Who Is Oona Gray Seppala?
Oona Gray Seppala is Sarah Rafferty and Santtu Seppälä’s eldest daughter. She was born on October 22, 2007, making her 18 years old as of August 2026. She has one younger sister, Iris Friday Seppälä.
During her childhood, the family spent substantial time between Los Angeles and Toronto while Rafferty filmed Suits. Oona visited the set regularly, but no reliable professional record establishes her as an actress or other public entertainment figure.
Key Takeaways
- Oona Gray Seppala was born on October 22, 2007.
- She is Sarah Rafferty and Santtu Seppälä’s eldest daughter.
- She has a younger sister, Iris Friday Seppälä.
- She grew up between Los Angeles and Toronto during Suits filming.
- Oona frequently visited the Suits set as a child.
- She has no confirmed public acting career.
- Her current education, net worth and relationship status remain private.
- should be treated cautiously.
Who Is Oona Gray Seppala?
Oona came to public attention through her mother rather than through a career she promoted herself.
Sarah Rafferty became internationally recognizable as Donna Paulsen on the USA Network legal drama Suits. The series ran from 2011 to 2019 and later gained a major second life through streaming. Oona was only three when the show began, so much of her childhood overlapped with her mother’s years on the series.
Her experience was still very different from that of a child actor. She was around professional television production and knew people connected with the show, but there is no reliable evidence that she attempted to turn that access into a public entertainment career.
Oona Gray Seppala Profile
| Detail | Verified Information |
|---|---|
| Full name | Oona Gray Seppälä |
| Common spelling | Oona Gray Seppala |
| Date of birth | October 22, 2007 |
| Age in August 2026 | 18 |
| Mother | Sarah Rafferty |
| Father | Santtu Seppälä |
| Younger sister | Iris Friday Seppälä |
| Known for | Sarah Rafferty’s eldest daughter |
| Childhood | Los Angeles and Toronto |
| Suits connection | Frequently visited the set |
| Acting career | No established professional career |
| Current university | Not reliably confirmed |
| Personal net worth | Not publicly established |
Mainstream reporting supports these core family and childhood details, while much of Oona’s current education, career and personal life remains private.
How Old Is Oona Gray Seppala?
Oona Gray Seppala was born on October 22, 2007. She turned 18 on October 22, 2025, and will turn 19 on October 22, 2026.
| Date | Age |
|---|---|
| October 22, 2007 | Born |
| October 22, 2020 | 13 |
| October 22, 2022 | 15 |
| October 22, 2023 | 16 |
| October 22, 2024 | 17 |
| October 22, 2025 | 18 |
| August 2026 | 18 |
| October 22, 2026 | Turns 19 |
As of August 2026, Oona Gray Seppala is 18 years old. Clarifying her birth date is useful because some secondary biography websites show conflicting ages.
Who Are Oona Gray Seppala’s Parents?
Her parents are Sarah Rafferty and Santtu Seppälä. The couple married in 2001, several years before their first daughter was born.
Their professional backgrounds are very different. Rafferty built an international television career, while Seppälä has worked largely outside show business in finance and investment management.
Sarah Rafferty: Oona Gray Seppala’s Mother
Sarah Rafferty is an American actress best known for portraying Donna Paulsen in Suits. Her character grew from Harvey Specter’s highly capable legal secretary into one of the show’s central figures.
After Suits, Rafferty appeared in other television projects and later played Katherine Walter in Netflix’s My Life with the Walter Boys. Interviews over the years show that she and Seppälä worked hard to keep family life connected even when filming required her to spend substantial time in Canada.
Santtu Seppälä: Oona’s Father
Santtu Seppälä has maintained a much lower public profile than his wife. Public reporting describes him as a finance and investment professional.
Rafferty and Seppälä met while studying at Yale University. Seppälä later earned an MBA from the Wharton School of the University of Pennsylvania and pursued a career in investment management.
The couple married on June 23, 2001. They welcomed their first daughter in 2007 and Iris in 2012.
Is Oona Gray Seppala American or Finnish?
Oona has clear family connections to both the United States and Finland. Sarah Rafferty is American, while Santtu Seppälä has Finnish roots.
It is therefore reasonable to describe Oona as having Finnish heritage through her father. What is less safe is assigning a precise citizenship status based only on unsourced biography sites. Stronger public reporting documents her family background more clearly than her individual citizenship.
Oona Gray Seppala’s Younger Sister, Iris
Oona has one younger sibling, Iris Friday Seppälä, who was born on January 27, 2012. The sisters are a little more than four years apart.
Sarah Rafferty has spoken warmly about her daughters, describing them as affectionate, funny, and close when they were younger. She has also said they enjoyed singing and dancing.
| Family Member | Relationship to Oona | Public Background |
|---|---|---|
| Sarah Rafferty | Mother | Actress best known for Suits |
| Santtu Seppälä | Father | Finance and investment professional |
| Iris Friday Seppälä | Younger sister | Born January 27, 2012 |
What Was Oona Gray Seppala’s Childhood Like?
One of the best-documented parts of her childhood concerns the family’s living arrangements during Suits.
The series filmed in Toronto, while Rafferty described Los Angeles as the family’s home base. Instead of spending long stretches apart, the family often moved together.
In a 2013 Redbook interview, Rafferty explained that the family moved “as a unit” when she worked in Toronto and said her five-year-old daughter attended two schools. Because Oona was five at the time, the comment referred to her.
A Two-City Childhood
Her early routine involved:
- Los Angeles as the family’s home base
- Toronto during Suits production
- schooling in two cities
- regular travel
- exposure to a professional television set
- family life organized around a demanding filming schedule
The phrase “two-city lifestyle” is more accurate than describing this arrangement as “bicoastal,” because Los Angeles and Toronto are not two coastal cities.
Did Oona Gray Seppala Grow Up in Los Angeles?
Yes. Los Angeles clearly played an important role in her childhood, and Rafferty specifically described the family’s home base as L.A.
However, there is an important distinction between saying she grew up partly in Los Angeles and claiming she was definitely born there.
Several biography sites list Los Angeles as her birthplace, but stronger public sources confirm the family’s L.A. home base more clearly than they confirm a precise birthplace.
- Confirmed: Los Angeles was the family’s home base.
- Confirmed: She spent substantial time in Toronto.
- Not sufficiently verified: A precise Los Angeles birthplace.
That small distinction improves the accuracy of the biography.
Did Oona Gray Seppala Visit the Suits Set?
Yes. This is one of the most interesting confirmed parts of her childhood.
Rafferty has said that Oona and Iris enjoyed visiting the Suits set. Their favorite areas reportedly included craft services, hair and makeup, and costume fittings.
In a 2024 NewBeauty interview, Rafferty added that her daughters were frequently around the production during the Toronto years and sometimes called out “action” and “cut.” She also said they became close with cast members and their families.
For Oona, Suits was therefore more than a television series starring her mother. It was part of the environment in which she grew up.
Did Oona Gray Seppala Appear in Suits?
There is no established professional acting credit showing that Oona appeared in Suits as a credited performer.
Her documented relationship with the show is that she:
- spent time on set
- knew cast members and their families
- visited production areas
- experienced filming as part of family life
Visiting a television production should not be confused with having an acting role in it.
Did Oona Watch Sarah Rafferty in Suits?
Interestingly, Rafferty has said her daughters did not regularly watch Suits, even though they grew up around its production.
She explained in a 2024 interview that they were frequently on set but were not regular viewers. Her younger daughter later watched a small amount and reportedly found it unusual to see her mother playing Donna rather than simply being “Mom.”
The daughters were more comfortable watching My Life with the Walter Boys, where Rafferty plays a maternal character.
Sarah Rafferty’s Approach to Raising Oona and Iris
Rafferty’s interviews offer a clearer picture of her daughters’ upbringing than most celebrity biography sites.
Staying Together
The family tried to remain together while Rafferty filmed rather than accepting long periods of separation.
Encouraging Communication
Rafferty has discussed wanting her daughters to remain true to themselves and know that they could communicate openly with their parents.
Building Family Connection
She has also spoken about helping them feel secure and confident as they became more independent.
Access Without Pressure
Oona and Iris were comfortable visiting the Suits set, but there is no evidence that Rafferty pushed either daughter toward acting.
Exposure to entertainment is not the same as pursuing an entertainment career.
Oona’s Public Appearances and Birthday Tributes
Although Oona has not developed a conventional celebrity profile, she has occasionally appeared in photographs shared publicly by Sarah Rafferty.
One well-documented example came when she turned 13 in October 2020. Rafferty shared a birthday photograph and celebrated becoming the mother of a teenager.
These occasional posts give audiences a limited glimpse of family milestones without turning her daughter’s private life into constant public content.
What Is Known About Oona Gray Seppala’s Interests?
Reliable information about her current hobbies is limited.
Rafferty did provide a few clues when her daughters were younger. She described Oona and Iris as outgoing, funny and affectionate and said they enjoyed singing and dancing.
They also had unusual exposure to:
- television production
- costume departments
- hair and makeup
- professional actors
- filming routines
None of those experiences proves Oona wants a career in entertainment. Some newer biography pages assign her interests such as journalism, literature, visual art or theater, but those details are not supported as clearly by stronger public sources.
Is Oona Gray Seppala an Actress or Following Sarah Rafferty Into Hollywood?
There is no reliable evidence that Oona has established herself as a professional actress or entered Hollywood professionally as of August 2026.
No strong professional source reviewed in the underlying article establishes:
- a significant filmography
- a recurring television role
- major movie credits
- professional modeling work
- major talent-agency representation
- a publicly announced acting project
Her childhood connection to television was close, but proximity is not a profession. Calling her Sarah Rafferty’s eldest daughter is more accurate than labeling her an actress, model or “rising Hollywood star.”
Where Did Oona Gray Seppala Go to School?
The strongest educational fact is historical: Sarah Rafferty confirmed that Oona attended two schools while the family divided time between Los Angeles and Toronto during Suits production.
What is not comparably well established includes:
- the name of her later high school
- her current university
- her academic major
- student organizations
- current educational plans
Several newer biography sites provide specific school claims, but repetition does not turn an unsupported claim into verification.
What Is Oona Gray Seppala Doing in 2026?
As of August 2026, Oona is 18 years old, but relatively little reliable information is available about her current day-to-day activities.
No authoritative source cited in the underlying research clearly establishes:
- a current university
- a professional occupation
- a film or television role
- modeling work
- a public business venture
- a professional social-media career
This does not mean she has no educational plans, work, hobbies or ambitions. It simply means those parts of her life are not sufficiently public to describe confidently.
The strongest 2026 description is that she has reached adulthood while maintaining a largely private public profile.
Does Oona Gray Seppala Have Instagram?
No widely established verified public Instagram account for her has been confirmed through the strongest sources used for this biography.
Some websites list supposed usernames, but readers should be cautious. A profile could be:
- a fan account
- an impersonation
- an unrelated person with a similar name
- an abandoned profile
- a private account incorrectly identified as hers
A matching username is not proof of identity.
What Is Oona Gray Seppala’s Net Worth?
There is no credible public estimate of Oona Gray Seppala’s personal net worth.
Some celebrity biography websites publish exact financial figures, but Oona has no publicly documented salary, business filings, entertainment contracts, or major assets that would support a reliable estimate.
Her Parents’ Wealth Is Not Her Net Worth
| Financial Topic | Same as Oona’s Personal Net Worth? |
|---|---|
| Sarah Rafferty’s acting earnings | No |
| Santtu Seppälä’s finance career | No |
| Estimated household wealth | No |
| Oona’s own assets and earnings | Yes |
A parent’s income or family wealth should not automatically be treated as Oona Gray Seppala’s personal net worth.
Does Oona Have a Boyfriend?
No reliably documented public romantic relationship has been established through the reputable sources cited in the underlying article.
Claims naming a boyfriend or partner should therefore be treated cautiously unless they come directly from Oona or credible reporting.
Her romantic life is not a necessary part of explaining who she is, particularly when she has not built a public celebrity career around sharing personal relationships.
Why Does Oona Gray Seppala Keep Such a Low Profile?
The more accurate statement is not that Oona has deliberately “chosen privacy,” because she has not publicly explained her motives. What can be observed is that her public footprint is limited.
Most credible information about her comes from:
- interviews with Sarah Rafferty
- photographs Rafferty has shared
- mainstream profiles of Rafferty’s children
- reporting about Rafferty and Santtu Seppälä
- interviews about the family’s Toronto years
She has not created the kind of public-facing identity commonly associated with celebrity influencers.
Why Are People Searching for Oona Gray Seppala in 2026?
Interest in her biography is closely connected to Sarah Rafferty’s continued visibility.
Suits experienced a major streaming resurgence after its original run ended, introducing Donna Paulsen and the rest of the cast to a new generation of viewers.
Rafferty later gained another audience through Netflix’s My Life with the Walter Boys. Season 3 premiered on August 6, 2026, with Rafferty returning as Katherine Walter, and Netflix has also confirmed another season.
Renewed attention around Rafferty naturally leads viewers to search for:
- Sarah Rafferty’s husband
- Sarah Rafferty’s daughters
- Rafferty’s family life
- Iris Seppälä
- her life outside Suits
That helps explain why Oona remains a search topic despite not having a conventional celebrity career herself.
Oona Gray Seppala and the Suits Connection
Her relationship with Suits is indirect but significant.
She was never one of the show’s established stars, but its production shaped a meaningful part of her childhood. Sarah Rafferty filmed in Toronto while the family’s home base remained Los Angeles, creating a two-city routine during Oona’s early years.
Oona and her sister also spent considerable time around the production. Rafferty has described them visiting craft services, hair and makeup, costume areas and interacting with cast members and their families.
The important distinction is simple: Oona grew up around Suits without becoming a professional part of its cast.
The Correct Spelling of Oona Gray Seppala
Readers may see both Oona Gray Seppala and Oona Gray Seppälä.
The second version preserves the Finnish letter ä in the surname. Major publications often use Seppälä, while English-language searchers frequently type Seppala without the diacritic.
For SEO, the simplified spelling makes sense as the main search form, while acknowledging Seppälä keeps the biography linguistically accurate.
What Does the Name Oona Gray Seppala Mean?
One distinctive element of her full name is the first name Oona.
Behind the Name identifies Oona as both an Anglicized form of Irish Úna and a Finnish form of the name. The older Irish name Úna is probably related to the Old Irish word úan, meaning “lamb.”
What About the Middle Name Gray?
Oona’s middle name is Gray, and her mother is also identified by the full name Sarah Gray Rafferty in biographical references.
The shared middle name is interesting, but no reliable interview cited in the underlying research explains why Gray was chosen for Oona. It is therefore reasonable to note the similarity without claiming she was definitely named after her mother.
How Do You Pronounce Oona?
In English, Oona is generally pronounced “OO-nuh.”
The name is connected to Irish Úna but is also used in Finland. The family surname may appear as Seppälä or as the simplified English spelling Seppala.
Why Do Online Biographies Disagree About Oona Gray Seppala?
Searches for Oona Gray Seppala often return pages that disagree on basic details.
Some websites list different:
- ages
- birthplaces
- schools or universities
- hobbies
- social-media accounts
- career ambitions
- occupations
- net-worth estimates
The problem is that celebrity-biography sites often repeat information from one another. A claim appearing on several websites does not necessarily mean it has been independently verified.
A Better Evidence Hierarchy
| Evidence Level | How It Should Be Used |
|---|---|
| Direct statement from Oona or Sarah Rafferty | Strong evidence |
| Reputable publication quoting the family | Strong evidence |
| Official professional record | Strong for career information |
| Reputable entertainment publication | Useful with attribution |
| Secondary celebrity biography | Requires independent verification |
| Unverified social-media profile | Do not assume authenticity |
| Repeated unsourced claim | Remains unverified |
| Rumor or fan page | Do not present as fact |
This source-first approach helps keep information about Oona Gray Seppala accurate and prevents unsupported claims from being presented as verified facts.
Verified Facts vs. Unconfirmed Claims About Oona Gray Seppala
| Topic | Evidence Status |
|---|---|
| Daughter of Sarah Rafferty | Verified |
| Daughter of Santtu Seppälä | Verified |
| Born October 22, 2007 | Verified |
| Age 18 in August 2026 | Verified |
| Older sister of Iris | Verified |
| Family home base in Los Angeles | Verified |
| Spent childhood time in Toronto | Verified |
| Attended two schools during early childhood | Verified |
| Visited the Suits set | Verified |
| Knew cast members and their families | Supported by Rafferty |
| Precise birthplace | Not sufficiently established |
| Current college | Not reliably established |
| Academic major | Not reliably established |
| Professional acting career | Not established |
| Modeling career | Not established |
| Current boyfriend | Not reliably established |
| Personal net worth | Not established |
| Verified public Instagram | Not clearly established |
| Specific future career plans | Not publicly established |
This distinction is more useful than filling information gaps with assumptions.
Facts About Oona You Should Not Automatically Assume Are True
“Oona Was Born in Los Angeles”
Possible, but not sufficiently established in the strongest sources cited in the research.
“Oona Is an Actress or Model”
No established professional acting or modeling career has been documented.
“Oona Studies at a Specific University”
No current university has been reliably confirmed.
“Oona Is Worth Millions”
No credible personal net-worth calculation exists.
“Oona Has a Public Instagram Account”
No widely verified public account has been established through strong sources.
“Oona Has a Boyfriend”
No reputable reporting confirms a public relationship.
“Oona Wants to Work in Hollywood”
No authoritative statement establishes that ambition.
What Makes Her Story Different From Other Celebrity Children?
Celebrity-child biographies often follow a predictable pattern: a famous parent has a child, the child gains social-media attention, and websites begin treating that attention as a career.
Oona’s public story is different.
She undoubtedly grew up close to fame. She spent time on a major television set, traveled because of production schedules and knew actors associated with Suits. Yet she has not publicly transformed those experiences into a highly visible celebrity identity.
She is known, but she is not extensively public. Those are not the same thing.
Sarah Rafferty’s Motherhood and Oona’s Upbringing
Rafferty’s comments over more than a decade show a consistent emphasis on family.
In 2013, she discussed moving the family together during filming. Later interviews addressed open communication and helping her daughters feel confident and secure. In 2024, she reflected on how deeply integrated they had been into everyday life on the Suits set.
Those comments provide more useful context about Oona’s upbringing than unsupported claims about wealth, relationships or career plans.
How Much of Oona Gray Seppala’s Life Is Actually Public?
Only a limited portion of Oona Gray Seppala’s life has been documented publicly.
Publicly Documented
Reliable information includes:
- her name
- birth date
- parents
- younger sister
- childhood connection to Los Angeles
- time spent in Toronto
- two-school arrangement
- visits to the Suits set
- selected birthday and family posts
- general parenting comments from Sarah Rafferty
Not Reliably Publicly Documented
Details that remain uncertain include:
- current university
- academic specialization
- boyfriend or partner
- income
- net worth
- current job
- professional ambitions
- verified public social-media activity
Adulthood does not automatically make every aspect of a celebrity’s child’s life public information.
Why Accuracy Matters With Celebrity Family Biographies
The phrase “verified story” matters because search engines contain plenty of celebrity information that looks precise simply because it is presented confidently.
A site can publish:
Net worth: $2 million
or:
Profession: Actress
without showing reliable evidence for either statement.
Once other sites copy that information, an unsupported claim can begin to look established.
Responsible biography writing should ask:
- Who originally reported the information?
- Was it provided by the person or family?
- Does a reputable publication confirm it?
- Is there a professional record supporting it?
- Are multiple sites independently verifying the claim or simply repeating one another?
Oona Gray Seppala Timeline
| Year | What Happened |
|---|---|
| 2001 | Sarah Rafferty and Santtu Seppälä marry |
| 2007 | Oona is born on October 22 |
| 2011 | Suits premieres |
| 2012 | Iris Friday Seppälä is born |
| 2013 | Rafferty discusses Oona attending two schools while the family divides time between L.A. and Toronto |
| 2016 | Rafferty discusses parenting, communication and her daughters visiting the Suits set |
| 2019 | Suits ends its original run |
| 2020 | Rafferty publicly marks Oona’s 13th birthday |
| 2023 | Suits experiences a major streaming resurgence |
| 2023 | My Life with the Walter Boys premieres |
| 2024 | Rafferty discusses her daughters’ experiences on the Suits set |
| 2025 | Oona turns 18 |
| August 6, 2026 | My Life with the Walter Boys Season 3 premieres |
| August 2026 | Oona remains largely outside a public entertainment career |
Frequently Asked Questions About Oona Gray Seppala
1. Who is Oona?
Oona is Sarah Rafferty and Santtu Seppälä’s eldest daughter. She is primarily known through her family connection rather than through an established entertainment career of her own.
2. How old is Oona in 2026?
She is 18 years old as of August 2026. She was born on October 22, 2007 and will turn 19 on October 22, 2026.
3. Who are Oona’s parents?
Her parents are actress Sarah Rafferty and finance professional Santtu Seppälä.
4. Does Oona have siblings?
Yes. Her younger sister is Iris Friday Seppälä, born January 27, 2012.
5. Is Oona an actress?
No established professional acting career has been reliably documented as of August 2026.
6. Did Oona appear in Suits?
No credited professional acting role has been established. She did, however, frequently visit the set with her sister.
7. Where did Oona grow up?
Los Angeles was the family’s home base, while she also spent substantial time in Toronto during Suits production.
8. Was Oona born in Los Angeles?
Some websites say so, but the strongest sources cited in the underlying research do not clearly establish a precise birthplace.
9. Where does Oona go to college?
No current university has been reliably confirmed through strong public reporting.
10. What is Oona doing now?
Her present education, occupation and professional plans have not been widely documented. As of 2026, she maintains a relatively private public profile.
11. What is Oona’s net worth?
There is no verified public estimate of her personal net worth.
12. Does Oona have Instagram?
No widely established verified public account has been confirmed through the strongest sources used for the biography.
13. Does Oona have a boyfriend?
No reliably sourced public romantic relationship has been established.
14. Is Oona Finnish?
She has Finnish heritage through her father, Santtu Seppälä. Her precise individual citizenship should not be assumed without stronger evidence.
15. What does the name Oona mean?
Oona is used in Irish and Finnish naming traditions. It is an Anglicized form of Irish Úna, which is probably derived from an Old Irish word meaning “lamb.”
16. How do you pronounce Oona?
In English, Oona is generally pronounced “OO-nuh.”
17. Why is Oona famous?
She is primarily known because she is Sarah Rafferty’s eldest daughter. Unlike her mother, she has not established a comparable public entertainment career.
Final Thoughts
Oona Gray Seppala has spent much of her life close to fame without becoming a conventional celebrity herself.
Born on October 22, 2007, she is Sarah Rafferty and Santtu Seppälä’s eldest daughter and the older sister of Iris Friday Seppälä. Her childhood included time in Los Angeles and Toronto, schooling in two cities and frequent visits to the Suits set while her mother played Donna Paulsen.
Those details are well documented. Many of the claims appearing beyond them are not.
There is currently no strong evidence establishing a professional acting career, specific current university, confirmed public boyfriend, verified personal net worth or major public social-media identity for Oona.
That absence should not be filled with guesses. It is part of what makes this biography different from the many celebrity profiles that turn speculation into apparent fact.
As Sarah Rafferty continues attracting audiences through Suits and My Life with the Walter Boys, curiosity about her family is likely to continue. The most useful profile, however, is one that clearly distinguishes what is known, what is supported and what remains private.
