Oona Gray Seppala is the eldest daughter of actress Sarah Rafferty, famous for her role as Donna Paulsen on the hit legal drama Suits, and Santtu Seppälä, a Finnish-American stock research analyst. Unlike many celebrity children who grow up in the constant glare of Hollywood, Oona has been raised with a strong emphasis on privacy, normalcy, and education. She is best known simply for being Sarah Rafferty’s daughter, yet her story is one of a grounded young woman navigating life at the edge of fame without being consumed by it. Her life blends two cultures, two career perspectives, and a family that values authenticity over attention.
Oona Gray Seppala Biography
| Attribute | Details |
| Full Name | Oona Gray Seppala |
| Birth Date | October 22, 2007 |
| Age | 18 years old (as of 2025) |
| Place of Birth | United States |
| Nationality | American |
| Heritage | Irish-American (from mother) and Finnish (from father) |
| Parents | Sarah Rafferty (Mother) and Aleksanteri “Santtu” Seppälä (Father) |
| Sibling | Younger sister, Iris Friday Seppälä (born January 2012) |
| Education | Attended two schools while growing up (Los Angeles and Toronto); graduated high school in 2026 |
| School Activities | Editor-in-Chief of her school publication (2025); former senior reporter and multimedia editor |
| Interests | Student journalism, multimedia storytelling, a cappella singing, varsity tennis, volunteering, reading |
| Founded Organization | Rhythms for Residents (a service organization) |
| Public Presence | Very limited; parents intentionally protect her privacy |
| Social Media | No public or verified Instagram or TikTok account |
Early Life and Birth Details
Oona Gray Seppälä was born on October 22, 2007, in the United States. She was the first child of Sarah Rafferty and Santtu Seppälä, who had married in 2001.
Her birth marked a new chapter for the couple, who balanced demanding careers in entertainment and finance with the responsibilities of parenthood. Oona’s early years were spent in a home where creativity and analytical thinking coexisted, giving her a unique foundation. Her parents were intentional about shielding her from unnecessary public exposure from the very beginning, choosing to raise her away from the tabloid spotlight that often follows celebrity families.
Oona Gray Seppala Mother: Sarah Rafferty
Sarah Gray Rafferty, born on December 6, 1972, in Greenwich, Connecticut, is an American actress best known for her role as the sharp and charismatic Donna Paulsen on the USA Network legal drama Suits, a character she played across all nine seasons.
Before fame, she studied English and Theatre at Hamilton College, graduated magna cum laude in 1993, and earned a Master of Fine Arts from the Yale School of Drama. Since Suits ended, she has starred as Katherine Walter in Netflix’s My Life with the Walter Boys and co-hosts the Suits rewatch podcast Sidebar with Patrick J. Adams. Her estimated net worth is around $3 million, built through her successful acting career.
Oona Gray Seppala Father: Aleksanteri Seppala
Oona’s father, Aleksanteri Olli-Pekka “Santtu” Seppälä, is a Finnish-American financial executive who has built a successful career in investment management and business strategy.
Born and raised in Finland, he holds dual citizenship of Finland and the United States and grew up across six countries, including Sweden, Denmark, France, and Germany. He earned his bachelor’s degree from Yale University, where he was a four-year member of the Varsity Tennis Team and an Ivy Champion, before completing his MBA at The Wharton School. He met Sarah Rafferty while they were both students at Yale, and the couple married in 2001. Professionally, he currently serves as Vice President of Strategy and Business Development at the Angeleno Group, a Los Angeles-based venture capital firm, and previously founded and served as Chief Investment Officer of Kiitos Capital Management.
Meet Her Sister: Iris Friday Seppälä
Oona is the older sister of Iris Friday Seppälä, who was born in January 2012.
The age gap of about four years means Oona has naturally taken on a protective and guiding role in her younger sister’s life. Sarah Rafferty has described her daughters as “outgoing and funny,” noting that they love to sing and dance and are incredibly affectionate with each other. While the two sisters share a close bond, their parents have kept both of them largely out of the public eye, sharing only occasional, carefully chosen glimpses of their family life on social media.
Growing Up Between Los Angeles and Toronto
During the years Suits was on the air, the Rafferty-Seppälä family lived a bicoastal lifestyle, splitting their time between Los Angeles and Toronto, where the legal drama was filmed.
As a result, Oona attended two different schools growing up. Sarah Rafferty once admitted she was initially “worried” about this arrangement but later found that “it ended up being an amazing, self-esteem-building experience” for her daughter. This dual-city childhood exposed Oona to different environments and social circles, helping her develop adaptability and resilience from a young age while maintaining a strong sense of family connection.
Is Oona Gray Seppala an Actress, Singer, or Dancer?
Despite her mother’s fame in Hollywood, Oona has not pursued a career as an actress, singer, or dancer.
She has no IMDb credits or professional performance roles attached to her name. However, she has shown a clear interest in storytelling and creative expression through her involvement in student journalism and multimedia work at her school. She served as a senior reporter, multimedia editor, and eventually became Editor-in-Chief of her school’s publication. She also participated in a community-oriented project called “Rhythms for Residents,” which connected students with local audiences through performance and production.
Her Life Away From the Spotlight
Oona’s life is deliberately private. Her parents have made a conscious choice to keep her out of the relentless cycle of celebrity news and paparazzi attention.
She is described as a student, a creator, and someone who experiments with storytelling in her own environment rather than seeking fame. Her public footprint consists mostly of a handful of student articles, local mentions, and occasional family posts shared by her mother. This approach has allowed her to grow up with a sense of normalcy that is rare for children of famous parents, focusing on education, community, and personal development rather than building a public brand.
Is Oona Gray Seppala on Instagram or TikTok?
No, Oona Gray Seppala does not have a verified or public Instagram or TikTok account. Any accounts claiming to be hers are unverified and should be treated with caution.
Sarah Rafferty occasionally posts about her daughters on her own Instagram, but she is careful never to fully show Oona’s face, respecting her daughter’s privacy. For example, on Oona’s 13th birthday in 2020, Sarah shared a photo of her sitting in front of a birthday cake but did not reveal her face. This consistent effort to protect her identity reflects the family’s strong commitment to keeping their children out of the public eye.
Why Interest in Her Has Grown Since 2023
Interest in Oona Gray Seppala has grown significantly since 2023, largely due to the resurgence of Suits on Netflix and the subsequent launch of the Suits rewatch podcast, Sidebar, hosted by Sarah Rafferty and Patrick J. Adams. As new audiences discovered the show, curiosity about the personal lives of its cast members naturally increased. Sarah Rafferty’s increased public appearances and her role in Netflix’s My Life with the Walter Boys also brought more attention to her family. Additionally, as Oona has entered her late teens, there is growing public interest in what the future holds for the daughter of such a beloved television star.
Common Myths and Misinformation, Debunked
Several myths and pieces of misinformation about Oona Gray Seppala circulate online.
One common false claim is that she has a public social media presence, which she does not. Another myth suggests she is pursuing an acting career like her mother, but there is no evidence to support this; she has no professional credits in entertainment. Some sources have also speculated about her exact birthdate, with varying claims, but the most reliable information points to October 22, 2007. It is also incorrect to assume she has a publicly known net worth or personal wealth, as she is a private individual and a minor for most of her public mentions.
Net Worth and Financial Life
There is no verified public net worth for Oona Gray Seppala. She is a private individual and, until recently, a minor, so any figures circulating online are purely speculative.
What is known is that her parents are financially successful: her mother Sarah Rafferty has an estimated net worth around $5 million, and her father Santtu Seppälä’s net worth has been estimated between $3 million and $10 million depending on the source. However, Oona herself has no independent public income, business ventures, or professional earnings that would constitute a personal net worth. Any claims about her personal wealth should be viewed with skepticism.
Legacy and Growing Influence
Although Oona Gray Seppala is still young, her legacy is already taking shape as a quiet symbol of privacy and normalcy in a world of celebrity excess.
Her parents’ deliberate choice to shield her from the spotlight has influenced conversations about how famous families can protect their children’s well-being. As interest in her grows—especially after the Suits resurgence—she represents a new kind of celebrity-adjacent figure: one known not for scandal or performance, but simply for being herself. Her early work in student journalism and community projects hints at a future where she might use her voice for storytelling and positive impact. For now, her influence lies in the grounded example she sets, proving that a famous name does not have to define a person’s path.
Conclusion
Oona Gray Seppala represents a rare case in the world of celebrity children: a young woman who has been given the space to grow up outside the spotlight, shielded by parents who prioritize privacy and normalcy over publicity. As the daughter of Sarah Rafferty and Santtu Seppälä, she carries a rich blend of Irish-American and Finnish heritage, along with the creative and analytical influences of her family. Her story is not one of fame or fortune but of education, quiet achievement, and the freedom to discover her own path. As she steps into adulthood, her future remains her own to shape, away from the expectations that often accompany a famous name.
Frequently Asked Questions
How many kids does Sarah Rafferty have?
Sarah Rafferty has two daughters, Oona Gray Seppälä, born in 2007, and Iris Friday Seppälä, born in 2012. She shares both children with her husband, Santtu Seppälä.
What nationality is Sarah Rafferty’s husband?
Sarah Rafferty’s husband, Santtu Seppälä, is American of Finnish descent. He was born in the United States and has Finnish family heritage.
How did Sarah Rafferty meet her husband?
Sarah Rafferty met Santtu Seppälä while they were both studying at Yale University. Rafferty attended Yale School of Drama, and the couple later married on June 23, 2001, at St. Mary Church in Greenwich, Connecticut.
What is Sarah Rafferty doing now?
Sarah Rafferty continues to work as an actress. She has appeared as Dr. Katherine Walter in Netflix’s My Life with the Walter Boys and has also been involved with Sidebar, a podcast she co-hosts with her Suits co-star Patrick J. Adams.
What religion is Sarah Rafferty?
Sarah Rafferty’s personal religious beliefs have not been clearly documented in reliable public sources. Her 2001 wedding to Santtu Seppälä was held at the Roman Catholic Church of St. Mary in Greenwich, Connecticut, but the ceremony alone does not establish her current personal religious affiliation.
How old was Sarah Rafferty during Suits?
Sarah Rafferty was 38 years old when Suits premiered in June 2011. She was born on December 6, 1972, and played Donna Paulsen throughout the series, which ran from 2011 to 2019.
