Namesakes
Fictional Characters from Books:
1 character
Zach Dempsey 2007 Thirteen Reasons Why 
Fictional Characters from Television:
2 characters
James Dempsey 1985 Dempsey and Makepeace
Zach Dempsey 2017 13 Reasons Why
Notable Actors and Entertainers:
1 actor
Patrick Dempsey 1966-
Notable Athletes:
1 boxing, 1 soccer
(boxing) Jack Dempsey 1895-1983
(soccer) Clint Dempsey 1983-
Olympic Medalists:
1 bronze/silver
(bronze/silver) Nick Dempsey 2004; 2012 sailing
Rock and Roll Hall-of-Famers:
1 musician
Michael Dempsey 2019 The Cure