Namesakes
Arthurian Characters:
1 character
Sir Percival (m) 
Fictional Characters from Books:
1 hero
Albus Dumbledore (a.k.a. Percival) 1997 Harry Potter and the Philosopher's Stone
Fictional Characters from Movies:
1 character
Albus Dumbledore (a.k.a. Percival) 2001 Harry Potter and the Philosopher's Stone
Hall-of-Famers:
1 ice hockey
(ice hockey) Harry "Whipper" Watson (a.k.a. Percival) 1994
Harry Potter Characters:
1 character
Albus Dumbledore (a.k.a. Percival)
Notable Actors and Entertainers:
2 actors
Rupert Julian (a.k.a. Percival) 1879-1943
Rollo Weeks (a.k.a. Percival) 1987-
Notable Filmmakers:
1 director
Rupert Julian (a.k.a. Percival) 1879-1943
Notable Musicians:
1 musician
Cecil Taylor (a.k.a. Percival) 1929-2018
Olympic Medalists:
2 bronze
(bronze) Percy Peter 1920 swimming - 4x200 m freestyle relay
(bronze) Percival Kinnear Wise 1924 polo
Other Leaders:
1 prime minister
Prime Minister P. J. Patterson (a.k.a. Percival) 1992-2006 Jamaica