Namesakes
Emmy Award Winners:
1 actress
(actress) Catherine O'Hara 2020 Schitt's Creek 
Fictional Characters from Books:
5 characters, 1 hero
Kim O'Hara 1901 Kim
Gerald O'Hara 1936 Gone With the Wind
Ellen Robillard O'Hara 1936 Gone With the Wind
Carreen O'Hara 1936 Gone With the Wind
Scarlett O'Hara 1936 Gone With the Wind
Suellen O'Hara 1936 Gone With the Wind
Fictional Characters from Movies:
3 characters
Carreen O'Hara 1939 Gone With the Wind
Scarlett O'Hara 1939 Gone With the Wind
Suellen O'Hara 1939 Gone With the Wind
Fictional Characters from Television:
1 character
Moira O'Hara 2011 American Horror Story: Murder House
Notable Actors and Entertainers:
4 actors
Maureen O'Hara 1920-2015
Catherine O'Hara 1954-
Paige O'Hara 1956-
Julia Stiles (a.k.a. O'Hara) 1981-
Olympic Medalists:
1 gold
(gold) Kelley O'Hara 2012 football