http://en.wikipedia.org/wiki/Rudolph_Giuliani
"Giuliani is married to Judith Nathan; this is his third marriage. He has two children, Andrew and Caroline, from his second marriage to television personality Donna Hanover, and one stepdaughter, Whitney, who is Nathan's daughter. Giuliani's first marriage, to Regina Peruggi, was annulled after fourteen years, according to Giuliani, because he discovered he and his wife were second cousins.[5] The couple did not have any children. In May of 2000, the New York Daily News broke news of his relationship to his now-third wife, and Giuliani then called a press conference to announce that he intended to separate from Donna Hanover.[6] [7] [8] Hanover, however, had apparently not been told about his plans before his press conference.[9]"
They "discovered" they were second cousins? How could anyone NOT know that?!