Adda Quinn is best known for being the first wife of Larry Ellison, the Oracle co-founder who would eventually become one of the most recognizable figures in technology. But looking only at her marriage to Ellison leaves out an important part of her story. Before Oracle became a global technology company, Quinn and Ellison were simply a young couple trying to build a life in California. After their divorce in 1974, Quinn developed a professional identity of her own through environmental research and project work at the Electric Power Research Institute (EPRI). Historical EPRI records and local reporting provide a much clearer picture of her career than many modern biography websites do.
Quick Bio Information
| Detail | Information |
|---|---|
| Full Name | Adda Quinn |
| Nationality | American |
| Best Known For | Larry Ellison’s First Wife |
| First Marriage | Larry Ellison |
| Marriage Years | 1967–1974 |
| Children With Ellison | None Reported |
| Professional Organization | Electric Power Research Institute |
| EPRI Location | Palo Alto, California |
| Professional Field | Environmental Research And Project Management |
| Documented EPRI Role | Project Manager / Environmental Research Professional |
| Environmental Focus | Soil Contamination And Land And Water Quality |
| Second Husband | George Sublett |
| Second Marriage | Reported In 1990 |
| Equestrian Interest | Strongly Documented |
| Community Recognition | 2004 Outstanding Horseperson-Citizen Of The Year |
| EnviroHorse | Reported Co-Founder |
| Historical Residence | Belmont, California, Reported In 2004 |
| Net Worth | Not Publicly Verified |
| Current Age | Not Reliably Established |
| Current Residence | Not Reliably Confirmed |
Who Is Adda Quinn?
Adda Quinn is a private American figure whose public biography is closely connected with Larry Ellison’s early life. Ellison and Quinn married in 1967 and divorced seven years later in 1974. At that time, Ellison was still building his career as a programmer and was years away from the company that would become Oracle. Independent biographical sources confirm the marriage timeline, while EPRI records later establish Quinn’s involvement in environmental research and project work.
What makes Adda Quinn interesting is what happened after the marriage ended. Rather than becoming a public personality because of her connection to Ellison, she largely stayed outside the spotlight. Her professional history includes documented work connected with environmental research, contaminated sites, and project management. Local reporting also shows that she became active in equestrian and environmental issues in her community.
Adda Quinn’s Early Life And Background
Very little reliable information is available about Adda Quinn’s childhood, parents, exact birth date, or formal education. This is an important distinction because many websites publish specific ages and childhood details without showing reliable evidence for them. Current research does not establish a dependable birth date or complete early-life biography.
The lack of information appears to reflect Quinn’s private lifestyle rather than a lack of interest in her. She became known mainly through her marriage to Ellison, while her own career received comparatively little mainstream coverage. For that reason, a responsible biography should not invent details about her childhood or education simply to fill gaps in the record.
How Adda Quinn Met Larry Ellison
According to biographical accounts of Larry Ellison, he met Adda Quinn at an employment agency in Berkeley, California, in 1967. Ellison had moved to the Bay Area and was working in programming before establishing the business career that would eventually make him famous. Their meeting happened during a very different period of his life.
The relationship developed quickly, and the couple married later that year. Quinn therefore knew Ellison long before Oracle existed. The company that eventually became Oracle was not established until 1977, three years after their divorce. That timeline is important because it places their marriage firmly in Ellison’s pre-Oracle years rather than during his later period of enormous wealth and public recognition.
Adda Quinn And Larry Ellison’s Marriage
Adda Quinn and Larry Ellison were married from 1967 until 1974. Their early married life was far removed from the luxury associated with Ellison decades later. Accounts of their relationship describe a modest beginning in the Bay Area, including approximately three years in a one-room apartment before they bought a house in Oakland around 1970.
Ellison was working as a programmer and moving through different employment opportunities. Their financial circumstances were therefore very different from the image people now associate with him. There was no Oracle fortune, no billionaire lifestyle, and no global technology empire. Their marriage belonged to a much earlier chapter of Ellison’s life.
Life Together Before Oracle
The years Quinn spent with Ellison provide a rare glimpse into his life before his business success. The couple experienced the ordinary financial pressures of a young marriage while Ellison pursued programming work and explored his interests. Later accounts have described disagreements involving money, work, household responsibilities, and different approaches to leisure.
Some popular articles give very specific details about Ellison’s spending and the couple’s disagreements. Those details should be treated carefully because much of the modern coverage traces back to secondary biographies rather than primary documentation. What can be established more confidently is that the marriage lasted seven years and ended before Ellison founded the company that became Oracle.
Why Did Adda Quinn And Larry Ellison Divorce?
Adda Quinn and Larry Ellison divorced in 1974. Accounts of their marriage have described financial pressure and differences in lifestyle as important factors, while some later profiles attribute particular observations about the relationship directly to Quinn. However, there is not enough reliable public evidence to reduce the divorce to one simple reason.
That distinction matters. Celebrity biographies often turn a complicated marriage into a dramatic story, but the available evidence supports a simpler conclusion: the relationship ended after seven years, and both individuals went on to build separate lives. Quinn’s later career demonstrates that her professional story did not end with the divorce.
Did Adda Quinn And Larry Ellison Have Children?
There are no reliable reports that Adda Quinn and Larry Ellison had children together during their marriage. This is another area where different Ellison family relationships can easily become confused because he later married other women and had children in later relationships.
For an accurate biography of Adda Quinn, it is important to keep those family histories separate. Her marriage to Ellison lasted from 1967 to 1974, before his later marriages and before the formation of Oracle.
Adda Quinn’s Career After Her Divorce
The most substantial documented part of Adda Quinn’s independent career is her connection with the Electric Power Research Institute, commonly known as EPRI. EPRI is a research organization focused on electricity and energy-related issues, and Quinn became involved with its environmental work in Palo Alto.
Modern articles frequently claim that Quinn managed 45 PhD researchers and an annual budget of about $45 million. Those figures appear repeatedly in secondary biographies, but the primary records currently accessible do not independently establish those exact numbers. A stronger article therefore treats them as reported claims rather than unquestionable facts.
What is firmly supported is that EPRI records identify Quinn with environmental research and project responsibilities. Her name appears in EPRI material concerning environmental projects, including research involving contamination and remediation. This provides solid evidence that her professional life extended well beyond her connection with Larry Ellison.
Adda Quinn’s Environmental Research Work
EPRI records provide particularly useful information about Quinn’s work. A 1994 EPRI Journal reference credits Adda Quinn in connection with environmental work involving contaminated former manufactured-gas-plant sites. Another EPRI report from 2000 acknowledges Quinn’s support for research into chemical source attribution at former manufactured-gas-plant sites.
These records show that Quinn was involved in serious environmental research rather than merely holding a conventional administrative position. The subject matter included contamination, environmental analysis, and remediation. Her documented professional work gives readers a much more complete understanding of her abilities and interests than a biography focused entirely on her first marriage.
Adda Quinn’s Equestrian And Community Work
One of the most revealing pieces of information about Quinn comes from a 2004 report in The Almanac. The publication identified her as a Belmont resident and reported that the San Mateo County Mounted Patrol named her its Outstanding Horseperson-Citizen of the Year. The recognition was connected to both her equestrian interests and her environmental research.
The report explained that Quinn became involved in a dispute over horse access to trails in Edgewood Park. Using her background in soil contamination research, she examined environmental questions surrounding horse use and trail conditions. She also co-founded EnviroHorse, an initiative focused on researching and communicating environmental questions involving horses and trail use. The report said she volunteered with local committees and trail patrols and wrote newsletter material under the name “Trail Nag.”
This part of her story is particularly valuable because it connects her professional knowledge with a personal interest. Quinn was not simply an equestrian enthusiast; contemporary local reporting shows that she applied research and environmental analysis to a community issue.
Adda Quinn And George Sublett
After her marriage to Larry Ellison ended, Adda Quinn later married George Sublett. Public records and secondary biographical accounts support the connection between Quinn and Sublett, with the marriage generally reported as taking place around 1990.
More detailed claims about their family life, including children, grandchildren, travel, and the circumstances surrounding Sublett’s later years, appear widely online but are not equally well documented by authoritative sources. Because Quinn has maintained a private life, these details should be presented cautiously unless supported by strong primary or contemporary sources.
Adda Quinn’s Hobbies, Travel And Interests
Horseback riding is one of the best-documented interests connected with Adda Quinn. Her 2004 community recognition demonstrates that equestrian activities were not simply a passing hobby. Her environmental work also became connected with questions about horse trails and environmental effects.
Various secondary accounts also describe Quinn as someone who enjoyed travel, outdoor activities, skiing, sailing, backpacking, cooking, reading, gardening, and needlework. These details help create a fuller portrait of her personality, but because the sourcing for many of them is secondary, they should not be treated with the same certainty as her documented EPRI and community work.
Where Is Adda Quinn Now?
Information about Adda Quinn’s present life is limited. A 2004 local report identified her as a Belmont resident, but that is historical information and should not be used to claim that she definitely lives there in 2026. There is no reliable recent source establishing her current residence or occupation.
Her limited public presence is one of the defining features of her biography. Unlike Larry Ellison, Quinn has not maintained a highly visible public profile. That means readers should be cautious with social-media accounts or websites claiming to represent her unless those identities can be independently verified.
Adda Quinn’s Net Worth
Adda Quinn’s net worth has not been reliably established through public financial records. Some websites provide estimated figures, but there is no strong evidence supporting a precise number. It would therefore be misleading to present a specific net-worth figure as fact.
Her documented professional career does, however, demonstrate that she developed a life and career independent of Ellison. The important story is not an invented estimate of her wealth but the work she performed in environmental research and project management after their divorce.
Adda Quinn’s Life Away From The Spotlight
Perhaps the most interesting aspect of Adda Quinn’s biography is the contrast between her life and Larry Ellison’s public career. Ellison became a global technology figure, while Quinn remained largely private. Her public record instead appears through historical biographies, EPRI documents, and occasional local reporting.
Those sources reveal someone whose professional interests extended into environmental research and whose personal interests included horses and community advocacy. Her story therefore offers more than a footnote in Larry Ellison’s biography. It is also the story of a person who maintained a professional identity outside the technology empire associated with her former husband.
What Is Known About Adda Quinn In 2026?
As of 2026, the reliable public record remains limited. Her marriage to Larry Ellison in 1967 and divorce in 1974 are well established. Her environmental research connection with EPRI is supported by institutional records, while her 2004 equestrian and environmental advocacy was documented by The Almanac.
At the same time, important personal details remain uncertain. Her exact birth date, current age, current residence, present occupation, and personal finances are not reliably established in the sources reviewed. Keeping those uncertainties visible makes an Adda Quinn biography more trustworthy rather than less complete.
Final Thoughts
Adda Quinn’s story begins with Larry Ellison, but it does not end there. She married Ellison in 1967, lived through the uncertain years before Oracle, and divorced him in 1974. In the decades that followed, she developed a professional life connected with environmental research at EPRI and became involved in equestrian and environmental advocacy in her community.
The strongest evidence about Adda Quinn comes not from celebrity websites but from historical records, EPRI publications, and contemporary local reporting. Those sources show a woman whose life included professional research, environmental interests, horses, and community involvement. Many personal details remain private, and that privacy should be respected. Ultimately, Adda Quinn is more than Larry Ellison’s first wife; she is a private individual with a documented professional and community history of her own.
FAQs About Adda Quinn
Who Is Adda Quinn?
Adda Quinn is an American woman best known publicly as Larry Ellison’s first wife. They married in 1967 and divorced in 1974. Beyond that relationship, she developed a professional career connected with environmental research and project work at the Electric Power Research Institute.
When Did Adda Quinn Marry Larry Ellison?
Adda Quinn married Larry Ellison in 1967. Their marriage lasted approximately seven years and ended in divorce in 1974, several years before Ellison and his partners established the company that became Oracle.
Did Adda Quinn Have Children With Larry Ellison?
There are no reliable reports that Adda Quinn and Larry Ellison had children together. His later family relationships should not be attributed to Quinn.
What Did Adda Quinn Do At EPRI?
EPRI records connect Adda Quinn with environmental research and project work. Her documented work included research concerning contamination and environmental issues, including former manufactured-gas-plant sites.
What Is Adda Quinn’s Net Worth?
Adda Quinn’s net worth has not been reliably disclosed. Online estimates are not supported by sufficiently strong financial evidence, so a precise figure should not be treated as fact.
Is Adda Quinn Still Living A Private Life?
Available evidence indicates that Quinn has maintained a relatively private public profile. A 2004 local newspaper report identified her as a Belmont resident, but there is not enough reliable recent evidence to establish her current residence in 2026.
Was Adda Quinn Involved In Environmental Advocacy?
Yes. A 2004 report documented her work on environmental questions involving equestrian trails and horse manure. It also reported that she co-founded EnviroHorse and received an Outstanding Horseperson-Citizen of the Year award from the San Mateo County Mounted Patrol.
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