Who Is Oona Gray Seppala? Inside The Life Story of Sarah Rafferty’s Oldest Daughter
Oona Gray Seppala is the oldest daughter of famous American actress Sarah Rafferty and Finnish-American businessman Santtu Seppälä. Born on October 22, 2007, in Los Angeles, California, Oona grew up in a loving home that balances Hollywood life with strong family values. Her mother is well-known for playing Donna Paulsen in the hit TV show Suits, while her father works as a successful financial analyst. Despite having famous parents, Oona lives a quiet and private life away from the spotlight. She is now a teenager with many interests, including music, journalism, and the performing arts.
Quick Bio Table
| Detail | Information |
|---|---|
| Full Name | Oona Gray Seppälä |
| Date of Birth | October 22, 2007 |
| Age | 18 years old (as of 2026) |
| Birthplace | Los Angeles, California, USA |
| Nationality | American |
| Ethnicity | Irish-American and Finnish |
| Mother | Sarah Rafferty (Actress) |
| Father | Santtu Seppälä (Financial Analyst) |
| Sibling | Iris Friday Seppälä (younger sister) |
| School | The Archer School for Girls, Los Angeles |
| Known For | Daughter of Suits actress Sarah Rafferty |
| Interests | Journalism, Music, Acting, Tennis |
Her Family Background
Oona comes from a family with deep roots in both entertainment and business. Her mother, Sarah Rafferty, was born on December 6, 1972, in Connecticut. Sarah became famous for her role as Donna Paulsen on Suits, a legal drama that ran for nine seasons. Her father, Aleksanteri Olli-Pekka Seppälä (known as Santtu), is a financial expert who works as Vice President of Strategy at Angeleno Group in Los Angeles.
Sarah and Santtu met while studying at Yale University in the 1990s. Sarah was getting her Master of Fine Arts in acting, and Santtu was studying finance. They dated for several years before getting married on June 23, 2001, at the Roman Catholic Church of St. Mary in Greenwich, Connecticut. The couple celebrated over 20 years of marriage and continues to support each other in their careers and family life.
Her Finnish and American Heritage
Oona has a special mix of cultures in her background. Her father, Santtu, was born to Finnish parents and grew up in many countries, including Finland, Sweden, Denmark, France, Germany, and the United States. He holds dual citizenship in both Finland and America. This gives Oona a unique connection to Finnish traditions and culture.
Her name also shows her family’s background. “Oona” is an Irish name that means “lamb” or “one.” The name became famous through Oona O’Neill, who was the daughter of playwright Eugene O’Neill and wife of Charlie Chaplin. Her middle name, “Gray,” likely honors family connections. Growing up with both American and Finnish influences has helped Oona understand different cultures and traditions.
Growing Up with a Famous Mother
Life was not always simple for Oona as a child. When Suits started filming in Toronto, Canada, the whole family moved together instead of staying apart. This meant Oona went to two different schools at the same time one in Los Angeles and one in Toronto. Her mother, Sarah, was worried about this at first. But it turned out to be a good experience for Oona, and it helped build her confidence.
Oona and her younger sister, Iris, often visited the Suits set with their mother. Sarah shared that her daughters loved going to the craft services truck, the hair and makeup trailer, and wardrobe fittings. The girls even got to wear beautiful designer clothes on some occasions. Sarah called these moments “treasures” and kept many photos from those special times.
Her Education and School Life
Oona attends The Archer School for Girls, a well-known private school in Los Angeles. This school focuses on creativity, leadership, and helping girls reach their full potential. Oona is an active student who takes part in many activities outside of class.
In 2022, Oona joined The Oracle, her school’s student news website. She started as a reporter and moved up to become a senior reporter in 2023. By 2024, she became the multimedia editor. Her work has been recognized nationally. In 2025, Oona won an Honorable Mention in the National Scholastic Press Association’s Clips & Clicks contest for her music review article. She is also a member of her school’s varsity tennis team, the a cappella singing group, the Honor Education Council, and the Service Squad.
Her Interests and Talents
Oona has many creative interests that show her artistic side. Music is very important to her. She sings with her school’s a cappella group and also plays the piano. These activities help her express herself and work with others as a team.
Besides music, Oona enjoys acting and has taken part in school plays and performances. Her involvement in performing arts started at a young age, and she continues to develop her skills. She also loves writing and journalism, which is clear from her work on The Oracle. Her creative spirit and hard work show that she is building her own path, separate from her famous mother.
Her Relationship with Sister Iris
Oona shares a close bond with her younger sister, Iris Friday Seppälä, who was born on January 27, 2012. The sisters are about five years apart in age, but they spend a lot of time together. Their mother, Sarah, has talked about how the girls love each other and always support one another.
In November 2019, Iris wrote a sweet Thanksgiving note to Oona, saying, “I am thankful for my sister because she gives me a napkin when my ice cream drips.” This small moment shows the loving relationship between the two sisters. Growing up together with shared experiences has made their bond very strong.
The Royal Wedding Experience
One of the most special moments in Oona’s young life was attending the Royal Wedding of Prince Harry and Meghan Markle in May 2018. Oona was about 10 years old at the time. Her mother, Sarah Rafferty, was close friends with Meghan from their years working together on Suits. Meghan and Sarah called each other “Suits sister wives” because of their strong friendship.
The whole family Sarah, Santtu, Oona, and Iris traveled to England for the wedding. They stayed at Coworth Park, the same hotel where Prince Harry and Prince William stayed the night before the ceremony. The family also visited Paris and London during this trip. Sarah later shared photos on Instagram and called it an “unforgettable family adventure.”
Conclusion
Oona Gray Seppala is more than just the daughter of a famous actress. She is a talented, hardworking young woman who is creating her own story. From her mixed Finnish-American heritage to her achievements in school journalism and music, Oona shows that she has her own unique gifts. Her parents have given her a balanced childhood that values privacy, education, and family love. As she continues to grow, Oona Gray Seppala is truly a name to watch for the future.
Frequently Asked Questions (FAQs)
1. Who is Oona Gray Seppala?
Oona Gray Seppala is the oldest daughter of actress Sarah Rafferty, known for her role in Suits, and businessman Santtu Seppälä. She was born on October 22, 2007, and is now a teenager living in Los Angeles.
2. What school does Oona Gray Seppala attend?
Oona attends The Archer School for Girls in Los Angeles. She is active in many school activities, including the student news site (The Oracle), varsity tennis, and the a cappella singing group.
3. Does Oona Gray Seppala have any siblings?
Yes, Oona has a younger sister named Iris Friday Seppälä, born on January 27, 2012. The two sisters share a close and loving relationship.
4. Did Oona Gray Seppala attend the Royal Wedding?
Yes, Oona and her family attended the Royal Wedding of Prince Harry and Meghan Markle in May 2018. Her mother, Sarah Rafferty, is a close friend of Meghan Markle from their time working together on Suits.
5. Is Oona Gray Seppala on social media?
No, Oona does not have any public social media accounts. Her parents keep her life private to protect her from media attention and allow her to enjoy a normal childhood.
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