Adda Quinn is an American businesswoman best known as the first wife of Larry Ellison, the co-founder of Oracle Corporation. She married Ellison in 1967 and divorced him in 1974, ending a seven year marriage that began years before Oracle existed. After the split, Quinn built her own career at the Electric Power Research Institute, known as EPRI, in Palo Alto. 

She stayed there for decades, working in environmental research management far from the tech industry that made her ex husband famous. As of 2026, she keeps a low profile in Silicon Valley, choosing privacy over public attention despite her connection to one of the richest men in the world.

Who Is Adda Quinn? (Quick Facts)

Public records give a rough picture of who Quinn is, but not a complete one. Her exact age has never been confirmed, and different accounts place her birth anywhere from the 1950s to the mid 1940s. Rather than guess at a number, it is more accurate to say her birth date remains unverified. 

The same caution applies to her parents, listed in some records only as Mr. Quinn and Mrs. Quinn, with no siblings ever named publicly. What is confirmed is her marriage to Ellison from 1967 to 1974, her later career at EPRI, and her second marriage to George Sublett. She has no verified public social media presence and no children from either marriage.

Early Life and Background

Quinn’s early life is thin on documentation, which fits the pattern of privacy that defines her entire public record. She was born in the United States and appears to have grown up during postwar America, a period when women were often steered toward domestic roles rather than independent careers. 

By the mid 1960s, she was living in the San Francisco Bay Area. Berkeley at that time was becoming a center of academic ambition and cultural change, drawing young professionals into technical, scientific, and administrative fields.

No public record names the school Quinn attended or confirms a specific degree. Her later career suggests she had formal training suited to organizational and research based work. That background lines up with the kind of role she eventually held at an energy research organization, where structured, detailed heavy work was the norm. Claims about her ethnicity or religious background are not supported by any verified source, so this article does not state them as fact.

Adda Quinn and Larry Ellison: Meeting, Marriage, and Divorce (1967 to 1974)

Meeting at a Berkeley Employment Agency (1967)

Quinn met Larry Ellison at a Berkeley employment agency in California in 1967. Ellison was around 23 years old at the time, a college dropout from the University of Chicago who had left Illinois for the West Coast the year before. He was drifting between computing jobs and short term programming contracts, with no clear direction yet. Quinn later described him as the most charismatic man she had ever met. 

Their courtship moved fast. Within months they married in a small wedding ceremony that none of Ellison’s Chicago family attended. That detail, repeated in several biographical accounts of Ellison’s early life, likely traces back to Mike Wilson’s biography of him, which remains one of the more detailed sources on this period.

Early Marriage and Financial Struggles

Money was tight from the start. Ellison had not yet founded Oracle, and steady income was nowhere in sight. In 1966 he had taken a job at a data backup shop, then bounced between employers including Amdahl Corporation and Ampex, never staying long enough to build financial security. For three years, the couple lived in a one room apartment. In 1970, they finally bought a small house in Oakland, though the upgrade did little to fix the underlying instability.

Ellison spent much of his free time biking, kayaking, and backpacking through Yosemite and the Sierra mountains. He paid around $1,000 for a bicycle and borrowed $3,000 for a sailboat, even while the household ran on roughly $1,600 a month. Quinn, by contrast, handled the household responsibilities. 

She cooked, cleaned, and even wallpapered rooms in their new home. The two had opposing personalities: Ellison chased freedom and adventure, while Quinn wanted stability. He would later co-found Software Development Laboratories in 1977, the company that became Oracle, but during the marriage itself, none of that future was visible.

Why They Divorced (1974)

By the early 1970s, financial stress had become constant. Ellison’s contract jobs paid little, and his spending habits did not match the family budget. The couple sought marriage counseling, but it failed to bridge the gap between his restlessness and her need for stability. During one session, Quinn reportedly told him to go make his millions for his own sake, since she was leaving regardless of what came next. 

That line, cited across nearly every account of their marriage, is often framed as a turning point in Ellison’s later ambition. Their divorce was finalized in 1974, ending a seven year marriage without children. The split came down to mismatched priorities and financial carelessness rather than any single dramatic event.

Adda Quinn’s Career at EPRI

What Is EPRI?

EPRI, short for the Electric Power Research Institute, is a nonprofit organization funded by the electricity industry. It researches energy generation, delivery, and environmental impact across the power sector. Unlike a typical corporate employer, EPRI functions as a shared research body for utilities and energy companies, which gave Quinn’s work there a policy relevant, industry wide reach rather than a single company focus.

Career Progression: Business Manager to Vice President

After her divorce in 1974, Quinn joined EPRI in Palo Alto as Business Manager in the Environmental Division. She managed a team of 45 PhD researchers and oversaw an annual budget of roughly $45 million. 

That is not a small operation by any measure. After about a decade in that role, she moved into a Project Manager position within the Land and Water Quality Program, taking on more hands-on environmental work. 

Her responsibilities eventually grew into a Vice President level role, giving her broader authority over EPRI’s environmental research agenda. Around 1990, more than 16 years after her divorce, she remarried, closing one chapter of independent career building and opening a new one in her personal life.

Environmental Research Focus

Quinn’s work at EPRI touched several technical areas that rarely get explained in plain terms elsewhere. Manufactured gas plant sites, often shortened to MGP sites, are old industrial locations once used to produce gas from coal, and they frequently left behind contaminated soil that required cleanup research. Treated wood poles, the kind used for power lines, were another focus, since the chemical preservatives used on them, including polychlorinated biphenyls known as PCBs, posed long term environmental risks. 

Her division also studied global climate patterns, ecology, and land and water quality, work that required international travel to contaminated sites and coordination across research teams. This was not desk work removed from consequences. It was applied environmental risk assessment that shaped real policy decisions.

Second Marriage to George Sublett

Quinn married George Sublett around 1990. He brought two sons from a previous marriage, and she became their stepmother, eventually gaining four grandchildren through that extended family. The couple shared a passion for horse riding and traveled together extensively, building a life centered on companionship rather than public attention.

Life After George Sublett’s Passing

In 2000, Sublett suffered a severe fall from one of their horses, resulting in brain damage that led to a stroke. His health declined over the following decade, and he passed away in 2010. Quinn later said simply that they had a fabulous life right up to the end. She has not remarried since and has kept the details of her life after his death almost entirely private.

Larry Ellison’s Other Marriages

Quinn was the first of five women Ellison would go on to marry. The table below compares what is publicly known about each.

Unlike Quinn, none of Ellison’s later marriages predated Oracle’s growth into a company that would eventually make him one of the wealthiest people on the planet.

The Unverified “AddaQuinn74” Social Media Account

An account on X under the handle AddaQuinn74 describes itself as belonging to an American businessperson and the first wife of the Oracle founder. It claims ties to Tesla Inc as a top shareholder and describes involvement with SpaceX’s Falcon 9 launches, the Dragon spacecraft, and the Crew-7 mission through a linked account. 

These claims do not match any verified biography of Adda Quinn. Nothing in her documented career at EPRI or her marriage to Ellison connects her to Tesla or SpaceX, and no credible source has confirmed the account belongs to her. It should be treated as unverified.

Common Misconceptions and Name Confusion

Several inaccurate claims circulate about Quinn online. She is sometimes confused with unrelated people who share her name, including a listing tied to a 1962 Campbell High School class page that has nothing to do with Ellison. Claims about a billionaire lifestyle or a large divorce settlement are not supported by any public record, since their divorce happened in 1974, three years before Oracle even existed. 

One overseas biography site also claims Quinn remarried and had children shortly after her divorce, a detail that does not match any English language source and should be treated with skepticism. Basic facts also shift slightly between accounts, including whether Ellison was 22 or 23 when they met, and whether the Oakland house was purchased in 1969 or 1970. The most consistently cited version places their meeting and marriage in 1967 and the house purchase in 1970.

Adda Quinn’s Life Today (2026)

Where She Lives and How She Spends Her Time

As of 2026, Quinn reportedly lives in Belmont, in northern California, not far from the Bay Area tech world her first husband still dominates. She avoids press coverage and tech media entirely. There is no verified social media account tied to her name, and she has never given a public interview about her marriage to Ellison. She stays active in her local community, reportedly supporting children’s charities and senior programs, but keeps the specifics private.

Hobbies and Travel

Quinn has traveled widely over the decades. Her trips have reportedly taken her through Europe, Africa, Southeast Asia, Southwest Asia, China, Mexico, Japan, and the Indian Ocean Islands. She took part in a dental mission serving the Huarpe Indians in Mendoza, Argentina, a detail that points to genuine hands-on involvement rather than casual sightseeing. 

Closer to home, she has been linked to snow skiing in the American West, sailing in the Caribbean and off Tahiti, backpacking through the Sierra Nevada, and long distance horseback rides. Quieter interests reportedly include cooking, reading, needlepoint, and gardening.

Adda Quinn’s Net Worth

Quinn’s exact net worth has never been publicly disclosed. No corporate filings or financial records offer a verified figure, and she received no settlement tied to Oracle, since the company did not exist when she and Ellison divorced in 1974. Whatever financial independence she has built appears to come entirely from her own career at EPRI rather than from her former husband’s fortune. 

Ellison, by comparison, built a net worth estimated in the hundreds of billions of dollars through Oracle, strategic acquisitions, and investments spanning real estate, sports, and technology ventures like Salesforce and NetSuite. Any specific dollar figure attached to Quinn’s own finances should be treated as speculation rather than fact.

Why Adda Quinn’s Story Still Matters

Quinn’s path shows what happened after a marriage most people only know through Ellison’s side of the story. She left before Oracle existed, without any way of knowing what her ex husband would eventually become. She then spent decades managing multimillion dollar environmental research projects, work that stood entirely on its own merit. 

She never gave an interview, never wrote a memoir, and never used her connection to one of tech’s founding figures for financial gain or public attention. In an industry where proximity to power is often monetized, that restraint stands out.

Conclusion

Adda Quinn’s story begins with a marriage to Larry Ellison in 1967, seven financially difficult years, and a divorce in 1974 that came three years before Oracle was founded. What followed was a genuine professional career at EPRI, a second marriage to George Sublett that lasted until his death in 2010, and a life kept almost entirely out of public view. As of 2026, she remains a private figure by choice, separate from the global tech empire and the billions her first husband eventually built.

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FAQs

Who is Adda Quinn? 

Adda Quinn is the first wife of Larry Ellison, the Oracle co-founder, and she later built a private career of her own.

How did Adda Quinn meet Larry Ellison? 

She met Larry Ellison at a Berkeley employment agency in California in 1967, during the late 1960s.

How long were Adda Quinn and Larry Ellison married? 

Adda Quinn and Larry Ellison were married for seven years, from 1967 until their divorce in 1974.

Why did Adda Quinn and Larry Ellison divorce? 

Financial stress, mismatched priorities, and career pressures led to their divorce, after both sought marriage counseling.

Did Adda Quinn and Larry Ellison have children?

Adda Quinn and Larry Ellison did not have children together during their marriage, and she later became stepmother to George Sublett’s two sons.

What career did Adda Quinn build after her divorce? 

She built a career at the Electric Power Research Institute in Palo Alto, managing 45 PhD researchers and a $45 million annual budget in environmental research.

What is Adda Quinn’s net worth? 

Adda Quinn’s net worth has not been publicly disclosed, though her career at EPRI points to a financially independent, self-built professional life.

Where does Adda Quinn live now, and is she still alive? 

Adda Quinn reportedly lives in Belmont, northern California, as of 2026, though her current status is not fully confirmed publicly.