American oil tycoon and art collector J. Paul Getty met the Ashby sisters, Belene and Allene, in the early 1920s. In 1926, while the three were on a trip to Cuernevaca, Mexico, Paul married 17-year-old Allene. At the time of his marriage to Allene, Paul was still married to his first wife, Jeanette Dermot, from whom he was divorced in 1927. Paul's marriage to Allene lasted less than two years; his frequent business trips caused them to drift apart. Their marriage was kept a secret for nine years, long after it ended. While Paul eventually severed ties with Allene, he maintained a life-long friendship with Belene and remembered her in his will.

Jean Paul Getty was born in Minneapolis, Minnesota on December 15, 1892 to George Franklin Getty (1855-1930) and Sarah Catherine McPherson Risher Getty. Around 1906 the Getty family moved to Los Angeles. Jean Paul, called "Paul," attended a private military school before going on to the University of Southern California in Los Angeles and the University of California, Berkeley. In 1911, Paul went to Oxford to study economics and political science, completing his diploma in 1913. Afterwards he embarked on a year-long Grand Tour of Europe, which no doubt sparked his interest in art and antiquities.

In 1914 Paul joined the family petroleum business and spent a year in the oil fields of Oklahoma. An astute investment in 160 acres near Stone Bluff, Oklahoma led to Paul's announcement two years later that he had earned his first million dollars. He returned to Los Angeles and took a break of more than a year before returning to the oil business. Paul then persuaded his father to shift the focus of the family business to the Los Angeles basin. Paul continued to work for the family company in addition to conducting oil drilling of his own, securing the family fortune by the time the stock market crashed in 1929. Upon his death in 1930 George left controlling interest in the company to Sarah. In 1934 Paul forced Sarah out of control of the company and gave her an annuity. His fortune grew as he acquired the controlling interest in several companies and became the head of a vast organization with activities in oil exploration, transportation, production and marketing, as well as minerals, manufacturing, real estate and agriculture. In the mid-1940s Getty bought the Saudi Arabian portion of the lease on the mineral rights in the Neutral Zone between Saudi Arabia and Kuwait; his wealth dramatically increased when this site produced oil in 1953.

Beginning in the early 1930s Getty lived in a house he built next to William Randolph Hearst's on the beach in Santa Monica. During World War II he moved to Tulsa, Oklahoma for four years to supervise wartime production of parts for Allied aircraft at his Spartan Aircraft plant. In 1946 he purchased 64 acres in Malibu, California and renovated the existing hacienda, known as the Ranch House, where he lived until 1951. When Getty departed the United States for Europe in 1951, he kept his Malibu estate for the display of his art collection and for the possibility of his eventual return. Getty had been collecting art since the 1930s. In 1938 he made his first major purchases: a group of furniture; a carpet that had belonged to Louis XIV, often called "Ardabil Carpet"; and Rembrandt's Marten Looten (he donated the Ardabil Carpet and the Rembrandt to the Los Angeles County Museum of Art in 1954). His other interest was antiquities, fueled by visits to the Vatican Museums that began in 1939. He took pride in being knowledgeable in the areas in which he was collecting and in finding bargains. Getty continued to collect art throughout his lifetime, despite occasional assertions that he was no longer in the market. By 1968 his art collection had begun to outgrow the Ranch House and he began planning a new building on the property to properly house these works. He chose to pattern this new museum building after a first-century Roman country house, based primarily on the plans of the ancient Villa dei Papiri near Herculaneum. This museum, often called the Villa, opened to the public on January 16, 1974.

After leaving the United States Getty lived in hotel suites in Europe until 1960 when he moved to Sutton Place, a historic 72-room Tudor manor located 25 miles southwest of London. In 1957 Fortune magazine designated Getty as the world's wealthiest man, and he became the object of considerable public interest. For the rest of his life, both the respectable press and the tabloids reported on his perceived eccentricities and his private life, which included five marriages and divorces. J. Paul Getty died in England on June 6, 1976 without ever returning to California. Although he never saw the museum, he is buried at the Getty Villa property, on a bluff overlooking the Pacific Ocean. Much to everyone's surprise Getty left the bulk of his fortune to the museum with a mission to promote "the diffusion of artistic and general knowledge."

J. Paul Getty's publications include: