Namesakes
Fictional Characters from Television:
1 character
Marcia Brady 1969; 1990 The Brady Bunch; The Bradys 
Notable Actors and Entertainers:
2 actors
Marcia Gay Harden 1959-
Marcia Cross 1962-
Notable Musicians:
1 singer
Marcia Barrett 1948-
Notable Writers:
1 author
Marcia Muller 1944-
Oscar Award Winners:
1 actress
(actress) Marcia Gay Harden 2001 Pollock
Saints:
1 saint
Saint Marcia the Martyr ?