Namesakes
Fictional Characters from Television:
1 character
Winnie Cooper (a.k.a. Gwendolyn) 1988 The Wonder Years 
Notable Actors and Entertainers:
1 actor
Mary Carlisle (a.k.a. Gwendolyn) 1914-2018
Notable Writers:
2 author/poets, 1 author
Jean Rhys (middle name Gwendolyn) 1890-1979
Gwendolyn B. Bennett 1902-1981
Gwendolyn Brooks 1917-2000
Olympic Medalists:
1 gold/silver/bronze, 1 silver
(silver) Hilda Strike (middle name Gwendolyn) 1932 100 m; 4x100 m relay
(gold/silver/bronze) Gwen Torrence 1992; 1996 200 m; 4x100 m relay; 4x400 m relay; 100 m