Who Is Oona Gray Seppala? Everything About Sarah Rafferty’s Daughter

Oona Gray Seppala is known publicly as the eldest daughter of American actress Sarah Rafferty, the actress widely recognized for playing Donna Paulsen on the legal drama Suits. Although growing up with a famous mother could easily have placed Oona in the public spotlight, her life has remained relatively private. Most of the information available about her comes from occasional comments and family details shared by her mother rather than from Oona herself. This has allowed her to experience much of her childhood away from the intense attention often associated with celebrity families.

Born in 2007, Oona grew up during an important period in her mother’s acting career. Her childhood overlapped with the years when Suits became a major part of Sarah Rafferty’s professional life. At different points, the family spent time between Los Angeles and Toronto, where the television series was filmed. Oona therefore had an unusual childhood experience that combined an ordinary family life with occasional exposure to a professional television set and the people who worked there.

Quick Information Table

Who Is Oona Gray Seppala?

Oona Gray Seppala is the first daughter of Sarah Rafferty and her husband, Santtu Seppälä. She was born on October 22, 2007, several years after her parents married. Unlike her mother, Oona has not developed a publicly documented career in acting or another entertainment field. Her public identity is mainly connected to her family, particularly her mother’s long-running television career.

That distinction is important when looking at information about Oona online. Celebrity children can attract considerable attention even when they have never chosen a public career. In Oona’s case, much of her life has remained outside the media, and reliable information about her personal interests, education, professional plans, and relationships is limited. Rather than filling those gaps with speculation, it is more useful to focus on the family history and childhood experiences that have been publicly documented.

When Was Oona Gray Seppala Born?

Oona Gray Seppala was born on October 22, 2007. She turned 18 in October 2025 and remains 18 during most of 2026, with her 19th birthday coming in October. Her birth made Sarah Rafferty and Santtu Seppälä parents for the first time.

Oona’s arrival came before Suits premiered in 2011, meaning she was still a young child when her mother’s career entered its most recognizable period. As Rafferty’s career became increasingly connected with the series, Oona experienced some of the unusual circumstances that came with having a parent who worked extensively in television. Still, Rafferty has generally kept her family life separate from the public side of her career.

Who Are Oona Gray Seppala’s Parents?

Oona’s mother is Sarah Rafferty, an American actress whose career includes television, film, and theater work. Rafferty studied at Hamilton College before earning a Master of Fine Arts degree from the Yale School of Drama. She later built a long television career, with Donna Paulsen in Suits becoming her signature role.

Oona’s father is Santtu Seppälä, a finance and investment professional. Sarah and Santtu met during their time at Yale and married on June 23, 2001, several years before Oona was born. Their relationship has remained relatively private, although Sarah has occasionally spoken warmly about their partnership and the importance of working together as parents.

The couple’s professional backgrounds are quite different. Sarah works in entertainment, while Santtu has pursued a career in finance. This gave Oona a family environment connected to two very different professional worlds.

Oona Gray Seppala and Her Younger Sister

Oona has a younger sister named Iris Friday Seppälä, who was born in January 2012. The sisters grew up together while their mother was balancing acting work with family responsibilities. Sarah has spoken publicly about the affection and closeness between her daughters, describing them as outgoing, funny, and loving.

Their relationship also became part of the way Sarah discussed motherhood. In interviews, she has shared small examples of the sisters caring for one another, particularly when talking about teaching empathy and emotional awareness. These comments provide a glimpse into the family environment without revealing unnecessary private details about the girls.

For Oona, having a younger sister also meant growing up with someone who shared many of the same unusual experiences of being part of an entertainment family. Both girls occasionally accompanied their mother to work, but neither was pushed into becoming a child performer.

Growing Up Between Los Angeles and Toronto

One of the more unusual aspects of Oona’s childhood was the family’s connection to both Los Angeles and Toronto. When Sarah was working on Suits, filming took place in Toronto even though the story was set in New York. This created a period in which family life involved moving between different locations.

Sarah has explained that this arrangement sometimes meant her daughters attended different schools and experienced changes that many children do not. At first, she had concerns about the effect of such a lifestyle, but she later described the experience as positive for Oona.

The experience gave Oona exposure to different environments from a young age. Rather than treating her mother’s television career as something completely separate from family life, the family sometimes allowed the children to experience aspects of the work environment while still maintaining boundaries around their private lives.

Did Oona Gray Seppala Appear on Suits?

Oona was not known as a regular actress on Suits. Her connection to the series came primarily through her mother. Sarah has said that her daughters visited the set while she was working in Toronto and became familiar with members of the cast and crew.

This distinction is useful because online searches can sometimes blur the difference between appearing around a television production and actually working as part of its cast. Oona grew up around the show because of her mother, but there is no established professional acting career for her connected to Suits.

Sarah has also said that her daughters did not grow up watching the series regularly. In later interviews, she explained that they were familiar with the environment surrounding the production, but the show itself was not simply treated as ordinary family entertainment.

What Is Sarah Rafferty Like as a Mother?

Sarah Rafferty’s public comments about motherhood suggest that raising her daughters has been an important part of her life alongside acting. She has spoken about the challenges of balancing professional commitments with family responsibilities and has emphasized communication and emotional support.

Her approach has also involved allowing her daughters to have their own identities. Rather than using their connection to Suits to create public careers for them, Sarah has largely allowed Oona and Iris to grow outside the entertainment spotlight.

This approach is particularly notable because Sarah’s own career has given her substantial public visibility. Her daughters have had opportunities to see the entertainment industry from close range without being required to participate in it. That separation has helped keep the focus on their family life rather than turning their childhood into a public spectacle.

What Is Known About Oona’s Education and Career?

There is limited reliable public information about Oona’s current education or career plans. She was raised with an emphasis on family and education, but specific details about schools, university plans, subjects of study, or professional ambitions have not been consistently documented by authoritative sources.

This lack of information should not be interpreted as evidence that Oona has no ambitions or accomplishments. It simply reflects the private nature of her life. She reached adulthood without establishing herself as a public entertainer, influencer, or media personality.

Some websites publish claims about celebrity children’s careers, interests, or future plans without providing strong evidence. In Oona’s case, those claims should be treated carefully. The confirmed story is relatively simple: she is Sarah Rafferty’s eldest daughter, she grew up partly around her mother’s Suits career, and she has largely remained outside the entertainment spotlight.

What Is Oona Gray Seppala’s Life Like Today?

As of 2026, Oona is a young adult who has reached a new stage of life away from the childhood years associated with her mother’s Suits career. However, her present-day activities remain mostly private. There is no strong public record establishing a specific occupation, major entertainment project, or public career.

That privacy is worth respecting, especially because Oona did not become famous through her own professional work. Her public recognition comes largely from being part of Sarah Rafferty’s family. There is therefore a meaningful difference between being a celebrity’s child and being a celebrity in one’s own right.

Her story may develop in the future, particularly as she makes independent choices about education, work, or other interests. Until she chooses to share more publicly, however, the available information should remain limited to well-supported facts.

Oona Gray Seppala and Sarah Rafferty’s Family Life

Sarah Rafferty’s family has remained an important part of her identity outside acting. Her marriage to Santtu Seppälä and the raising of their two daughters have accompanied her career for many years. Even while working on demanding television productions, she has spoken about the importance of being present for her children.

For Oona, this meant growing up with parents from different professional backgrounds and a mother whose work sometimes required travel. The family managed the demands of that lifestyle while trying to give the children a sense of normalcy. Oona’s story therefore offers a quieter perspective on celebrity life: not every child of a famous actor seeks attention or follows the same career path.

Final Thoughts

Oona Gray Seppala is best understood as Sarah Rafferty’s eldest daughter, rather than as a celebrity who has built an entertainment career of her own. Born in 2007, she grew up during her mother’s rise to major television recognition through Suits and experienced parts of that world from behind the scenes. Her childhood included time between Los Angeles and Toronto, visits to her mother’s set, and the experience of growing up alongside her younger sister, Iris.

At the same time, much of Oona’s personal life remains private. Her education, career plans, relationships, and other personal matters have not been broadly documented through reliable public sources. That makes it important to separate confirmed family information from speculation.

For fans of Sarah Rafferty, Oona’s story provides a glimpse into the actress’s life away from the screen. It shows how Rafferty balanced a demanding career with motherhood while allowing her daughters to develop largely outside the entertainment spotlight.

FAQs

1. Who is Oona Gray Seppala?

Oona Gray Seppala is Sarah Rafferty’s eldest daughter with her husband, Santtu Seppälä. She was born in 2007 and has largely lived a private life away from the entertainment industry.

2. How old is Oona Gray Seppala?

Oona was born on October 22, 2007. She turned 18 in October 2025 and will turn 19 on October 22, 2026.

3. Who is Oona Gray Seppala’s mother?

Her mother is Sarah Rafferty, the American actress best known for playing Donna Paulsen on Suits. Rafferty has also appeared in other television projects, including My Life with the Walter Boys.

4. Does Oona Gray Seppala act in Suits?

There is no established record of Oona having a professional acting role in Suits. She did, however, visit the set while her mother was working on the series and became familiar with the production environment.

5. Does Oona Gray Seppala have siblings?

Yes. Oona has a younger sister named Iris Friday Seppälä, who was born in January 2012. Sarah Rafferty has spoken about the close and affectionate relationship between her two daughters.