Kennedy was born at Weill Cornell Medical Center in New York City. Her parents were then Senator John F. Kennedy and his wife Jacqueline. She was only three, when her father became the 35th president of the United States. She lived in the White House from January 20, 1961 until his assassination on November 22, 1963. She then lived for a while in Georgetown, Washington, D.C. before moving with her mother and younger brother John in New York City in late 1964.