The 7th Earl of Lucan, who
disappeared in November 1974 after leaving the nanny of his children dead in a sack, and his wife
brutalised. Although it is unclear what became of him after the warrant for his arrest was issued, many people claim to have seen him
around the world since, and the British Tabloids will occasionly run a story on someone who may be him.
Full story at LordLucan.com
He has been missing long enough for his peerage to be given to his son.