Namesakes
British Prime Ministers:
2 prime ministers
William Pitt the Elder 1766-1768 
William Pitt the Younger 1783-1801; 1804-1806
Notable Actors and Entertainers:
2 actors
Brad Pitt 1963-
Michael Pitt 1981-
Olympic Medalists:
1 bronze/silver
(bronze/silver) William Fox-Pitt 2004; 2008; 2012 equestrian
Oscar Award Winners:
1 actor
(actor) Brad Pitt 2020 Once Upon a Time in Hollywood