Former First Lady Jacqueline Kennedy Onassis died of a form of lymphatic system cancer on May 19, 1994. She was 64 years old and passed away in her apartment in New York City.
The type of cancer that Mrs. Onassis suffered from attacked the lymph nodes and severely compromised her immune system. She checked in to New York Hospital - Cornell Medical Center on the Monday before her death, returning home to Fifth Avenue on Wednesday because the doctors had no further treatment options for her. She was the widow of President John F. Kennedy and Aristotle Onassis, a Greek shipping magnate.