Namesakes
Fictional Characters from Television:
1 character
Elyse Keaton (a.k.a. Donnelly) 1982 Family Ties 
Notable Actors and Entertainers:
2 actors
Donal Donnelly 1931-2010
Meg Donnelly 2000-
Olympic Medalists:
1 gold
(gold) Euphrasia Donnelly 1924 swimming - 4x100 m freestyle relay