Namesakes
Fictional Characters from Song Titles:
1 character
(character) Marcello 2012 Oh Marcello! 
Notable Actors and Entertainers:
1 actor
Marcello Mastroianni 1924-1996
Notable Athletes:
1 soccer
(soccer) Marcello Lippi 1948-
Olympic Medalists:
1 silver
(silver) Marcello Del Duca 1976 water polo