Namesakes
Fictional Characters from Books:
1 character, 1 hero
Bertha Antoinetta Mason 1847 Jane Eyre 
Perry Mason 1933 The Case of the Velvet Claws
Fictional Characters from Television:
4 characters
Rosemary Mason 1996 Silent Witness
George Mason 2001 24
Bree Van de Kamp (a.k.a. Mason) 2004 Desperate Housewives
Leo Mason 2012 Major Crimes
Notable Actors and Entertainers:
4 actors
James Mason 1909-1984
Margery Mason 1913-2014
Marsha Mason 1942-
Mercedes Mason 1982-
Olympic Medalists:
2 silver
(silver) Michele Brown (a.k.a. Mason) 1964 high jump
(silver) Germaine Mason 2008 high jump
Other Leaders:
1 president
President Sandra Mason 2021- Barbados
Rock and Roll Hall-of-Famers:
2 musicians
Nick Mason 1996 Pink Floyd
Dave Mason 2004 Traffic
Saints:
1 blessed
Blessed John Mason ?-1591