Namesakes
Lord Thomas Clifford
(m) 1414-1455 
Shakespearian Characters Henry VI (2)
Lord John Clifford
(m) 1435-1461
Shakespearian Characters Henry VI (2); Henry VI (3)
Doug Clifford
(m) 1945-
Rock and Roll Hall-of-Famers 1993 Creedence Clearwater Revival