Namesakes
British Prime Ministers:
1 prime minister
William Petty 1782-1783 
Notable Actors and Entertainers:
1 actor
Lori Petty 1963-
Notable Musicians:
1 musician
Tom Petty 1950-2017
Rock and Roll Hall-of-Famers:
1 musician
Tom Petty 2002 Tom Petty and the Heartbreakers