Adda Quinn is a name that appears most often in connection with Larry Ellison, the Oracle co-founder whose career eventually made him one of the most recognizable figures in the technology world. Yet Quinn’s own story is much quieter. She was married to Ellison from 1967 to 1974, long before Oracle existed and before his later wealth and fame.
What makes Adda Quinn particularly interesting is what happened after that marriage ended. Rather than remaining publicly defined by her relationship with Ellison, she developed a professional career connected to environmental research and project management. Historical records also connect her with the Electric Power Research Institute, or EPRI, and with environmental work involving soil contamination and land and water quality.
Because Quinn has lived a largely private life, there are important gaps in the public record. Her exact birth date, early childhood, education, personal finances, and present-day circumstances are not reliably documented in major public sources. That means a responsible biography needs to separate established facts from details that are merely repeated online.
This article takes a closer look at Adda Quinn’s biography, her early connection with Larry Ellison, their marriage and divorce, her professional life, family story, environmental work, and the reasons her name continues to attract interest.
Quick Bio of Adda Quinn
| Detail | Information |
|---|---|
| Full Name | Adda Quinn |
| Known For | First wife of Larry Ellison |
| Nationality | American |
| Marriage to Larry Ellison | 1967–1974 |
| Children With Ellison | None publicly documented |
| Professional Field | Environmental research and project management |
| Organization Associated With | Electric Power Research Institute |
| Known Research Area | Soil contamination and environmental issues |
| Later Husband | George Sublett, according to published accounts |
| Public Profile | Very private |
| Current Net Worth | Not publicly verified |
Who Is Adda Quinn?
Adda Quinn is best known publicly as the first wife of Larry Ellison. The two married in 1967, when Ellison was still a young programmer trying to establish himself professionally. Their marriage ended in 1974, three years before the company that became Oracle was founded.
That timeline is important. Modern audiences know Ellison as a technology billionaire and one of the central figures in the history of enterprise software. Quinn knew him at a very different stage of his life, when his future was uncertain and his professional ambitions were still developing.
The Washington Post reported that Quinn met Ellison at a San Jose employment agency in 1967. The account places both of them at about 23 years old when they married. It also offers rare firsthand perspectives on their early relationship and Ellison’s career ambitions.
Quinn herself has remained far less visible than her former husband. There is no substantial public-media career attached to her, and she has generally stayed outside the celebrity and business spotlight. Consequently, much of the available information about her comes from historical reporting, environmental documents, and accounts of her connection with Ellison.
Adda Quinn’s Early Life Remains Largely Private
One of the biggest challenges in writing about Adda Quinn is the lack of reliable public information about her childhood.
Unlike Larry Ellison, whose biography has been documented extensively because of his enormous role in the technology industry, Quinn did not become a major public figure. As a result, details such as her exact date of birth, childhood location, parents, siblings, and early educational history are not firmly established across authoritative sources.
That absence of information should not be filled with assumptions. Numerous websites publish precise biographical details about Quinn, but some of those claims cannot be traced to strong primary or contemporary sources.
What can be established is that Quinn was a young woman living in Northern California when she met Ellison in the 1960s. Their meeting occurred at an employment agency, placing her at the beginning of adulthood and professional life at the same time Ellison was attempting to find his own direction.
Her later professional record provides a clearer window into her abilities than the limited information available about her childhood.
How Adda Quinn Met Larry Ellison
Adda Quinn and Larry Ellison met in 1967 through an employment agency in the San Jose area. At the time, Ellison was not the famous technology entrepreneur people recognize today. He was a young programmer looking for work and trying to build a stable career.
The circumstances of their meeting make their later history especially interesting. When Quinn entered Ellison’s life, Oracle was still years away from existing. There was no billion-dollar software company, no global technology empire, and no billionaire reputation surrounding his name.
Their relationship therefore belongs to a completely different chapter of Ellison’s biography. Quinn knew him during a period when he was still trying to establish himself, and the couple faced the ordinary financial and personal pressures of young adulthood.
They married the same year they met. According to the Washington Post’s historical account, they were both around 23 at the time.
Adda Quinn and Larry Ellison’s Marriage
Adda Quinn and Larry Ellison were married in 1967 and remained together until 1974. Their approximately seven-year marriage took place entirely before the creation of the company that would become Oracle.
Their early married life was considerably more modest than the lifestyle associated with Ellison today. Published accounts describe the couple living in a small one-room apartment for several years before eventually purchasing a house in Oakland.
The contrast between those years and Ellison’s later life is striking. Today, his name is associated with Oracle, major business investments, luxury properties, sailing, aviation, and extraordinary wealth. During his marriage to Quinn, however, his circumstances were much less predictable.
The marriage also coincided with Ellison’s efforts to advance his programming career. The Washington Post reported on tensions within the relationship and on disagreements surrounding his professional and personal choices. Quinn later provided recollections of those years, while Ellison also acknowledged aspects of his behavior from that period.
Why Did Adda Quinn and Larry Ellison Divorce?
The exact private reason for the divorce cannot be reduced to one definitive explanation.
Their marriage ended in 1974, and several accounts have discussed financial pressure, differences in lifestyle, and difficulties within the relationship. Historical reporting also indicates that the couple attempted marriage counseling before ultimately separating.
Because Quinn has remained private, the public record does not provide a complete account of every issue that affected their marriage. Some websites state particular reasons with considerable certainty, but those claims are not always supported by primary documentation.
The safest conclusion is that the marriage ended after approximately seven years and that the couple had experienced significant personal difficulties before the divorce. Anything more specific should be presented as an attributed account rather than established fact.
The timing is also essential. Their divorce occurred in 1974, while Oracle’s origins date to 1977. In other words, Quinn’s marriage to Ellison ended before the business success that eventually transformed his public identity.
Adda Quinn and Larry Ellison Had No Publicly Documented Children Together
Another frequently searched question concerns whether Adda Quinn and Larry Ellison had children.
Available biographical sources do not document any children from their marriage. Ellison later had two widely known children, David Ellison and Megan Ellison, with his third wife, Barbara Boothe.
David and Megan were born years after Quinn and Ellison divorced. This distinction matters because online family biographies sometimes combine different periods of Ellison’s personal history.
David Ellison went on to work extensively in film and entertainment, while Megan Ellison became known as a film producer and founder of Annapurna Pictures. Neither is Adda Quinn’s child.
So, when discussing Adda Quinn’s family connection to Larry Ellison, the accurate description is that she was his first wife, not the mother of his publicly known children.
Adda Quinn’s Life After Larry Ellison
The story of Adda Quinn becomes especially interesting after her divorce.
Instead of becoming a public personality because of her former husband, Quinn developed a professional life in environmental research management. Her career became connected with the Electric Power Research Institute in Palo Alto, California.
This part of her biography is supported by more concrete documentation than many details about her early personal life. An Environmental Protection Agency publication, for example, identifies Adda Quinn as a Project Officer for the Electric Power Research Institute in connection with a soil-treatment case study.
A federal cost-and-performance report likewise lists Quinn as an EPRI Project Officer and gives an EPRI contact address in Palo Alto.
These records are useful because they show that Quinn’s professional identity was not simply an internet-era invention created around her connection with Ellison. She appears in historical environmental documentation in her own professional capacity.
Adda Quinn’s Career at the Electric Power Research Institute
The Electric Power Research Institute, commonly known as EPRI, became an important part of Quinn’s professional story.
Published accounts describe her working in EPRI’s environmental division and later as a project manager associated with land and water quality programs. Some secondary sources report that she managed approximately 45 PhD researchers and an annual research budget of about $45 million.
Those figures are widely repeated online, but they should be treated as reported figures rather than independently established facts. The accessible primary-style records more firmly establish Quinn’s role as an EPRI Project Officer and her involvement in environmental research projects.
Her work appears to have involved the practical side of environmental research: coordinating projects, working with scientific teams, and dealing with environmental contamination and remediation questions.
That career path gives Quinn an identity separate from Larry Ellison’s technology career. While Ellison became associated with software and databases, Quinn’s documented professional work moved toward environmental research and applied science management.
Her Work in Soil Contamination and Environmental Research
One of the clearest professional links to Adda Quinn comes from environmental research.
Federal environmental documentation identifies Quinn as an EPRI Project Officer in connection with research into soil treatment and bioremediation. These projects examined ways to address contaminated environments and evaluate the performance of different remediation approaches.
Another federal report lists Quinn as the primary EPRI contact for a remediation case study. The documentation demonstrates that she was involved in professional environmental work rather than simply holding an administrative title with no connection to research.
This part of her career also helps explain why later local reporting described her as having a background in researching soil contamination.
Her professional story therefore intersects with environmental science at a time when contamination, remediation, and ecological impacts were becoming increasingly important subjects for government, utilities, researchers, and communities.
Adda Quinn and Her Equestrian Interests
Adda Quinn’s interests later extended beyond her professional work.
A 2004 report from The Almanac identified Quinn 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 her environmental research and her involvement in equestrian issues.
The story began with controversy surrounding horse use on trails. Quinn became involved in research concerning the environmental effects of equestrian activity and trail construction, eventually becoming an advocate for evidence-based discussion of the issue.
The report also said she co-founded EnviroHorse, an effort focused on raising funds and synthesizing research related to horse manure and environmental questions surrounding equestrian trails.
This is a fascinating part of Quinn’s biography because it demonstrates how her professional environmental background crossed over into a personal interest. Rather than simply participating in horseback riding, she applied research and analysis to a local community issue.
Adda Quinn’s Community Work
The 2004 Almanac report provides one of the rare detailed snapshots of Quinn as an individual outside her connection to Larry Ellison.
According to the newspaper, she volunteered on committees and boards, participated in trail patrols, and served as an equestrian docent. She also wrote newsletter articles under the nickname “Trail Nag.”
Her involvement appears to have been motivated by environmental and community concerns rather than celebrity exposure.
The report described her using scientific information to challenge environmental claims about horses and trails. That approach fits naturally with her earlier professional experience in environmental research.
In this sense, Quinn’s later public appearances were connected not to her former marriage but to her own interests, professional knowledge, and community activities.
Adda Quinn’s Family Life After Divorce
Information about Quinn’s later family life is more limited than information about her marriage to Ellison.
Several biographical accounts state that she later married George Sublett, reportedly around 1990. Those same sources describe Sublett as having children from an earlier relationship, which would have made Quinn part of a blended family.
However, these later-life details are not documented with the same level of authority as the records concerning Quinn’s EPRI work. They should therefore be treated as published biographical accounts rather than definitive public records.
The broad picture is nevertheless consistent: Quinn appears to have built a private personal life after her divorce from Ellison and did not continue seeking attention because of her former husband’s growing fame.
That privacy is one of the defining characteristics of her biography.
Adda Quinn and Larry Ellison’s Lives Took Very Different Paths
Perhaps the most interesting aspect of Adda Quinn’s story is the divergence between her life and Ellison’s.
When they married in 1967, neither had the public profile associated with their later years. Ellison was still developing his career, while Quinn was beginning her own adult and professional life. Their marriage ended in 1974.
Ellison founded the company that became Oracle in 1977 and eventually became one of the defining figures of the software industry. Biography.com identifies him as Oracle’s co-founder and notes his long leadership role at the company.
Quinn’s career followed a very different route. Her professional record points toward environmental research, scientific project management, and community involvement.
Neither story needs to be treated as an extension of the other. Their marriage is historically relevant because it connects two people who later became associated with very different fields and public identities.
Did Adda Quinn Work for Oracle?
There is no reliable evidence that Adda Quinn worked for Oracle.
The chronology makes that distinction particularly clear. Quinn and Ellison divorced in 1974, while Oracle’s origins date to 1977.
Her documented professional connection is instead with the Electric Power Research Institute and environmental research.
This distinction is worth emphasizing because online biographies can sometimes merge details from different periods of Ellison’s life. His later wives and professional associates had different relationships with Oracle, but that does not mean Quinn was involved in the company.
Her professional identity should therefore remain separate from Oracle’s corporate history.
Adda Quinn’s Net Worth
There is no authoritative public figure for Adda Quinn’s personal net worth.
Some websites publish specific estimates, but these figures are not supported by reliable financial disclosures or authoritative wealth databases. Quinn has maintained a private life, and there is no dependable public record showing her assets or current income.
It is also misleading to assume that Quinn shared in Larry Ellison’s later fortune simply because she was married to him before Oracle was founded.
Their divorce occurred in 1974, while the company that became Oracle was established several years later.
Any claim about a specific divorce settlement or a supposed share of Oracle’s later wealth should therefore be treated cautiously unless supported by documentary evidence.
Where Is Adda Quinn Today?
Adda Quinn’s current life is not extensively documented in reliable public sources.
A 2004 local newspaper article identified her as a Belmont resident and described her involvement in equestrian and environmental activities at that time.
That historical location should not automatically be treated as her present address. There is insufficient reliable evidence to establish where she currently lives or what she is doing today.
Her limited public presence appears consistent with the pattern seen throughout her later life: professional work and community involvement without pursuing celebrity status.
For that reason, claims on social media or newer websites about her current investments, business holdings, or other activities should be approached carefully unless independently verified.
Why Adda Quinn Continues to Attract Interest
Interest in Adda Quinn is largely connected to the extraordinary transformation of Larry Ellison’s life.
She knew him before Oracle, before his immense wealth, and before he became a household name within the technology industry. Their marriage therefore provides a rare window into a period of his life that is far less familiar than his later career.
At the same time, Quinn’s own professional record gives the story another dimension.
She was not simply someone who appeared in a billionaire’s biography and then disappeared. Historical environmental documents identify her as a professional project officer, while local reporting later documented her community and environmental advocacy.
That combination—an early connection to a major technology figure and a separate professional identity—explains why her biography continues to generate curiosity.
Adda Quinn’s Story Beyond Larry Ellison
It is easy to describe Adda Quinn as “Larry Ellison’s first wife” and stop there. Historically, that description is accurate but incomplete.
Her marriage to Ellison lasted about seven years, but the rest of her adult life extended far beyond that relationship. She developed a career involving environmental research and project management and later participated in local environmental and equestrian activities.
Her professional work is particularly significant because it can be traced through documents outside celebrity biographies. Federal environmental publications identify her by name and professional role, giving her story a documentary foundation independent of her former husband’s fame.
That is perhaps the most useful way to understand Adda Quinn: as a private individual whose public record happens to intersect with one of the biggest technology stories of the modern era.
Final Thoughts on Adda Quinn’s Biography
Adda Quinn’s biography is ultimately a story about a private person whose life briefly intersected with the early history of one of America’s most famous technology entrepreneurs.
Her marriage to Larry Ellison from 1967 to 1974 happened before Oracle existed and before Ellison became a billionaire. That makes their relationship an interesting early chapter in his biography, but it should not overshadow Quinn’s own life.
After the divorce, Quinn pursued professional work in environmental research and project management. Federal documents connect her with EPRI as a Project Officer, including work involving soil contamination and remediation.
Later reporting also documented her involvement in equestrian and environmental causes in the San Mateo County area. Her community work shows another side of her life that has little to do with Silicon Valley wealth or celebrity.
Because so much of Quinn’s personal life remains private, the most accurate biography is also the most careful one. The confirmed pieces tell a compelling story on their own: a young woman who married Larry Ellison before his rise, built a professional career in environmental research, became involved in community advocacy, and largely stayed away from the public spotlight.
Frequently Asked Questions About Adda Quinn
1. Who is Adda Quinn?
Adda Quinn is an American private individual best known for her 1967–1974 marriage to Larry Ellison, the co-founder of Oracle. She later developed a professional career connected with environmental research and project management at the Electric Power Research Institute.
2. When did Adda Quinn marry Larry Ellison?
Adda Quinn married Larry Ellison in 1967. They had met through an employment agency in the San Jose area, when both were young adults. Their marriage ended in divorce in 1974.
3. Did Adda Quinn and Larry Ellison have children?
There are no publicly documented children from Adda Quinn and Larry Ellison’s marriage. Ellison’s two well-known children, David and Megan Ellison, were born during his later marriage to Barbara Boothe.
4. What did Adda Quinn do for a living?
Quinn’s documented professional work includes environmental research and project management with the Electric Power Research Institute. Federal environmental documents identify her as an EPRI Project Officer on soil-treatment and remediation projects.
5. Did Adda Quinn receive Larry Ellison’s Oracle fortune?
There is no reliable public evidence establishing that Quinn received a share of Ellison’s later Oracle fortune. Their marriage ended in 1974, before Oracle was founded in 1977, and Quinn’s personal financial records are private.
6. What is known about Adda Quinn today?
Very little current information is reliably available. A 2004 local report documented her environmental and equestrian advocacy, but that historical reporting does not establish her present residence or activities.
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