There has long been a tabloid rumor that JFK’s White House mistress, Mary Pinchot Meyer, had a son she put up for adoption the summer after his assassination. Mary was the ex-wife of CIA exec Cord Meyer. Mary was herself mysteriously murdered while jogging in Georgetown on October 12th, 1964. Immediately after her murder, CIA counter-intelligence chief James Jesus Angleton was interrupted while burgling her apartment by Mary’s brother-in-law, Benjamin Bradlee and sister Antoinette Bradlee. Angleton had been looking for Mary’s tell-all diary, and when Antoinette later discovered its whereabouts she reportedly gave it to him!
http://www.torontosun.com/News/Canada/2008/02/07/4832857.html
“The New York Post reported Thursday that Vanity Fair magazine has a story on a Vancouver man in his late 40s named Jack who is allegedly the result of an affair between his Texan mother and Kennedy, who was assassinated in 1963 in Dallas.”
Supposedly, she was introduced to Kennedy by LBJ.