Mrs. Onassis, who had enjoyed robust good health nearly all her life, began being treated for non-Hodgkin's lymphoma in early January and had been undergoing chemotherapy and other treatments in recent months while continuing her work as a book editor and her social, family and other personal routines.
In 1968, Jackie married Greek shipping magnate Aristotle Onassis, one of the wealthiest men in the world. After Onassis' death in 1975, Jackie began a career in publishing in New York City, which she continued until her death in 1994.
Jackie first met Aristotle Onassis when JFK was still a senator, after Robert Kennedy had investigated the Greek magnate’s business practices and fined him millions of dollars.
On November 22, 1963, Onassis was riding alongside the president in a Lincoln Continental convertible before cheering crowds in Dallas, Texas, when he was shot and killed by Lee Harvey Oswald, widowing Onassis at the age of 34.
On November 22, 1963 John F. Kennedy was assassinated in Dallas and Jacqueline Kennedy became a widow at age 34. She planned the president's state funeral, which was watched by millions around the world who shared her grief and admired her courage and dignity.
Jackie won an Emmy for her televised tour of the White House restoration project that she spearheaded.
The Kennedys created the White House Historical Association to help publicize the heritage of the president's house. They got the White House declared a museum to help preserve it and put in place a fine arts committee to accept gifts of antique furniture that fit the White House.
They were qualities that spoke of her upbringing in the wealthy and fiercely independent Bouvier and Auchincloss families, of mansion life in East Hampton and Newport, commodious apartments in New York and Paris, of Miss Porter's finishing school and Vassar College and circles that valued a woman's skill with a verse-pen or a watercolor brush, at the reins of a chestnut mare or the center of a whirling charity cotillion.
Jacqueline Kennedy Onassis was born Jacqueline Lee Bouvier on July 28, 1929, in Southampton, New York.
At age 31, Jacqueline Kennedy became the third youngest first lady in U.S. history and the first to be the mother of an infant since the turn of the century.