Kenneth O'Donnell

Kenneth Patrick O'Donnell (March 4, 1924 – September 9, 1977) was an American political consultant. He was the special assistant and appointments secretary to President John F. Kennedy from 1961 until Kennedy's assassination in November 1963. O'Donnell was a close friend of President Kennedy and his younger brother Robert F. Kennedy.
O'Donnell also was an aide to President Lyndon B. Johnson from 1963 to 1965. He later was an adviser to Robert Kennedy's 1968 presidential campaign.
He died of gastrointestinal hemorrhage due to alcoholism in September 1977, aged 53.