Namesakes
British Prime Ministers:
1 prime minister
Edward Smith-Stanley 1852; 1858-1859; 1866-1868 
Hall-of-Famers:
2 ice hockey
(ice hockey) Barney Stanley 1962
(ice hockey) Allan Stanley 1981
Nobel Prize Winners:
1 chemistry
(chemistry) Wendell Meredith Stanley 1946
Notable Actors and Entertainers:
3 actors
Dennis Morgan (a.k.a. Stanley) 1908-1994
Kim Stanley 1925-2001
Christopher Stanley 1965-
Notable Athletes:
1 ice hockey
(ice hockey) Allan Stanley 1926-2013
Notable Explorers and Adventurers:
1 explorer
Henry Morton Stanley 1841-1904
Notable Musicians:
1 musician
Paul Stanley 1952-
Notable Scientists and Inventors:
1 chemist
Wendell Meredith Stanley 1904-1971
Rock and Roll Hall-of-Famers:
1 musician
Paul Stanley 2014 Kiss
Shakespearian Characters:
3 characters
Sir John Stanley Henry VI (2)
Sir William Stanley Henry VI (3)
Lord Stanley Richard III