Namesakes
Fictional Characters from Television:
1 character
George O'Malley 2005 Grey's Anatomy 
Hall-of-Famers:
1 baseball
(baseball) Walter O'Malley 2008
Notable Actors and Entertainers:
1 actor
Daragh O'Malley 1954-
Notable Musicians:
1 singer
Dido (a.k.a. O'Malley) 1971-