http://en.wikipedia.org/wiki/John_F._Kennedy
John Fitzgerald "Jack" Kennedy (May 29, 1917 – November 22, 1963), often referred to by his initials JFK, was the 35th President of the United States, serving from 1961 until his death in 1963.
http://en.wikipedia.org/wiki/10_downing_street
On May 19, 1962, she attended the early birthday celebration of President John F. Kennedy at Madison Square Garden, at the suggestion of Kennedy's brother-in-law, actor Peter Lawford. Monroe performed "Happy Birthday" along with a specially written verse based on Bob Hope's "Thanks for the Memory". Kennedy responded to her performance with the remark, "Thank you. I can now retire from politics after having had 'Happy Birthday' sung to me in such a sweet, wholesome way."(also see, Happy Birthday, Mr. President).
http://en.wikipedia.org/wiki/Happy_Birthday,_Mr._President .
http://en.wikipedia.org/wiki/Marilyn_Monroe .