Namesakes
American First Ladies:
1 first lady
Elizabeth Monroe 1817-1825 
American Presidents:
1 president
James Monroe 1817-1825
Fictional Characters from Television:
2 characters
Lindsay Monroe 2004 CSI: NY
Adam Monroe 2006 Heroes
Hall-of-Famers:
1 basketball
(basketball) Earl Monroe 1990
Notable Actors and Entertainers:
2 actors
Marilyn Monroe 1926-1962
Meredith Monroe 1969-
Notable Athletes:
1 basketball
(basketball) Earl Monroe 1944-
Notable Musicians:
1 musician
Bill Monroe 1911-1996