Oona Gray Seppala is best known as the eldest daughter of actress Sarah Rafferty and her husband, Santtu Seppälä. Although she was born into a family connected to both Hollywood and the financial world, Oona has largely remained outside the entertainment spotlight. Her private upbringing, famous mother, and family background have nevertheless made her name a subject of public curiosity.
Sarah Rafferty is widely recognized for playing Donna Paulsen on the television drama Suits. She has also appeared in other television projects, including My Life with the Walter Boys. Away from acting, Rafferty has spoken publicly about motherhood and the importance of maintaining a close relationship with her daughters.
This article explores Oona Gray Seppala, including her birth, parents, sister, childhood, family background, connection to Suits, public profile, and what is currently known about her life.
Who Is Oona Gray Seppala?
Oona Gray Seppala is the eldest daughter of Sarah Rafferty and Santtu Seppälä. PEOPLE reported that the couple welcomed Oona in October 2007, followed several years later by their second daughter, Iris Friday Seppälä.
Unlike her mother, Oona does not have a widely documented professional career in Hollywood. Most of the public interest surrounding her comes from her connection to Sarah Rafferty and the Suits fan community.
This distinction is important because numerous websites publish claims about Oona’s education, career, social-media accounts, and artistic interests without providing strong evidence. Consequently, the most reliable information about her comes primarily from established publications discussing Sarah Rafferty’s family.
Oona Gray Seppala Age and Birth Date
On October 22, 2007, Oona Gray Seppala was born. PEOPLE confirms that Sarah Rafferty and Santtu Seppälä welcomed their first daughter in 2007. IMDb’s biographical information for Rafferty also lists Oona’s birth date as October 22, 2007.
Because her birthday falls in October, Oona will turn 18 in 2026.
Some websites incorrectly publish different birth years and dates for Oona. For example, several low-quality biographies have claimed that she was born in 2000. Those claims conflict with the information reported by PEOPLE and other established sources.
For that reason, October 22, 2007, is the more reliable date of birth to use when discussing her biography.
Oona Gray-Seppala’s Parents
Oona’s parents are Sarah Rafferty and Santtu Seppälä.
Sarah Rafferty is an American actress best known for her portrayal of Donna Paulsen on Suits. Her performance helped make Donna one of the show’s most recognizable supporting characters. Rafferty later continued her television career with projects including My Life with the Walter Boys.
Santtu Seppälä has pursued a career in finance. IMDb’s biography information identifies him as Rafferty’s husband and describes his professional background in investment management.
Sarah and Santtu married in 2001, several years before Oona was born. PEOPLE reports that the couple married on June 23, 2001.
The combination of Sarah’s entertainment career and Santtu’s financial career has given Oona a family background that is connected to two very different professional worlds.
Oona Gray-Seppala’s Mother, Sarah Rafferty
Understanding Oona’s public profile requires understanding her mother’s career.
Sarah Rafferty became internationally recognized through Suits, the legal drama that premiered in 2011. She played Donna Paulsen, a character known for her intelligence, confidence, loyalty, and sharp sense of humor.
Rafferty’s career extended beyond Suits. She later appeared in Netflix’s My Life with the Walter Boys, in which she played a maternal role. In interviews, she has spoken about how her own experience as a mother influenced her appreciation for playing parents on screen.
Despite her busy career, Rafferty has repeatedly emphasized the importance of her family. PEOPLE reported that she describes her two daughters as central to her life and has spoken positively about their personalities and relationship.
Oona Gray Seppala’s Father, Santtu Seppälä
Oona’s father, Santtu Seppälä, has maintained a considerably lower public profile than his wife.
He has a background in finance and investment management rather than entertainment. IMDb’s biography identifies him as a graduate of Yale and notes that he holds an MBA from the University of Pennsylvania.
His relatively private professional life has meant that Oona grew up with one parent working in entertainment and another working in finance.
This combination may also help explain why Oona’s life has not been as publicly documented as those of children who actively pursue careers in Hollywood.
Oona Gray-Seppala Has a Younger Sister
Oona has one younger sister, Iris Friday Seppälä.
According to PEOPLE, Iris was born in January 2012, making her approximately four years younger than Oona.
Sarah Rafferty has occasionally shared affectionate comments and family moments involving both daughters. She has described the girls as close, funny, affectionate, and energetic.
Growing up together while their mother worked in television gave the sisters an unusual childhood experience. However, Rafferty and her family have generally sought to keep their children’s private lives out of excessive public attention.
Growing Up With a Famous Mother
One of the most interesting aspects of Oona Gray-Seppala’s childhood is the balance between fame and ordinary family life.
When Suits was filming in Toronto, Rafferty’s family spent significant time between Toronto and Los Angeles. Reports about Rafferty’s family indicate that Oona experienced a childhood marked by moving between the two locations due to her mother’s professional commitments.
This arrangement meant that Oona grew up understanding the demands of an acting career from an early age.
At the same time, Rafferty has spoken about maintaining a strong family connection despite the challenges associated with work and travel. Her approach emphasizes keeping family life at the center rather than allowing Hollywood to define her children’s childhoods completely.
Oona Gray-Seppala and Suits
Oona was born in 2007, meaning she was only a few years old when Suits premiered in 2011.
Her mother’s role as Donna Paulsen eventually became a defining part of Rafferty’s career. As a result, Oona grew up as her mother became increasingly recognizable to television audiences.
Interestingly, Rafferty has said that her daughters did not necessarily watch Suits itself. PEOPLE reported that the girls enjoyed visiting their mother’s set, while more recent projects were more accessible to them.
This suggests that Oona viewed her mother’s career through a family lens rather than simply as a television celebrity.
Oona Gray Seppala’s Education
Information about Oona’s education is limited.
Various websites claim that she attended specific schools and participated in journalism, theater, or other activities. However, these details are not consistently supported by authoritative sources.
Because Oona has maintained a relatively private life, it is more responsible to avoid presenting unverified educational information as fact.
It can be established that her parents have discussed family life, education, and the maintenance of a supportive environment for their daughters. Her mother’s comments indicate that parenting and communication have been important priorities.
Oona Gray Seppala’s Career
There is currently no reliably documented professional career for Oona Gray Seppala.
This is another area where online biographies frequently become speculative. Some websites describe her as an actress, singer, dancer, or emerging artist, but strong mainstream sources do not support these claims.
It is therefore inaccurate to state categorically that Oona has established herself as an actress or professional performer.
Her mother’s career may naturally spark speculation that Oona will eventually enter the entertainment industry. However, there is no reliable evidence that she has chosen that path.
As a young adult, she has plenty of time to determine whether she wants to work in entertainment, business, education, the arts, or another field entirely.
Oona Gray-Seppala’s Private Life
Privacy is the most defining characteristic of Oona’s public profile.
While Sarah Rafferty occasionally shares family photographs or birthday messages, Oona herself has not developed the extensive public presence that many celebrity children do.
That privacy is significant. Being born to a famous actress can bring substantial public attention, but Oona appears to have grown up largely outside the intense media spotlight.
For this reason, information about her romantic relationships, personal finances, current residence, education, and daily activities should not be presented as fact unless supported by reliable sources.
Oona Gray-Seppala and Social Media
There are online claims that social media accounts allegedly belong to Oona. However, these accounts are difficult to authenticate.
Several biography websites publish usernames and social media claims, but without confirmation from Oona herself or a highly reliable source, such information should be treated with caution.
The lack of a clearly established public social-media identity is consistent with the broader picture of Oona as someone who has maintained considerable privacy.
Oona Gray Seppala’s Net Worth
Oona Gray Seppala’s personal net worth has not been reliably reported.
Because she does not have a publicly documented high-profile career, websites assigning her a specific net-worth figure are generally making estimates rather than reporting verified financial information.
Her parents’ professional success should also not be confused with Oona’s personal wealth. Sarah Rafferty has had a successful acting career, while Santtu Seppälä has worked in finance, but there is no reliable public accounting of Oona’s individual assets or income.
Therefore, it is best to say that Oona Gray Seppala’s net worth is not publicly established.
Why Is Oona Gray Seppala Famous?
Oona is best known as the daughter of Sarah Rafferty.
Search interest surrounding her has increased as Suits has continued to attract new audiences through streaming and as Rafferty has appeared in newer television projects.
Fans often become interested in the families of actors whose careers they follow. In Oona’s case, that curiosity has led to searches for information about her age, parents, sister, education, career, and current life.
However, her own public identity remains separate from her mother’s celebrity career.
What Is Oona Gray Seppala Doing Now?
As of 2026, there is no comprehensive, authoritative public account of Oona’s current career or day-to-day activities.
At 18, she is entering a period of life in which education, career choices, and personal independence can develop quickly. Whether she eventually chooses to pursue acting like her mother or takes a completely different direction remains unknown.
The absence of public information should not be interpreted negatively. In many cases, it simply means that a person has successfully maintained a private life despite having famous parents.
Frequently Asked Questions About Oona Gray Seppala
Who is Oona Gray Seppala?
Oona Gray Seppala is the eldest daughter of actress Sarah Rafferty and finance professional Santtu Seppälä. She was born in October 2007.
How old is Oona Gray Seppala?
In 2026, Oona Gray Seppala will be 18 years old, having been born on October 22, 2007.
Who is Oona Gray Seppala’s mother?
Her mother is actress Sarah Rafferty, best known for playing Donna Paulsen on Suits.
Who is Oona Gray Seppala’s father?
Her father is Santtu Seppälä, a finance and investment professional.
Does Oona Gray Seppala have siblings?
Yes. She has a younger sister named Iris Friday Seppälä, who was born in January 2012.
Conclusion
Oona Gray Seppala has attracted public attention primarily because of her connection to actress Sarah Rafferty and finance professional Santtu Seppälä. Born on October 22, 2007, she is the couple’s eldest daughter and the older sister of Iris Friday Seppälä.
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