Namesakes
Fictional Characters from Movies:
1 character
Charles Foster Kane 1941 Citizen Kane 
Nobel Prize Winners:
1 physics
(physics) Norman Foster Ramsey Jr. 1989
Olympic Medalists:
1 bronze, 1 silver/gold
(bronze) Ephraim Graham (a.k.a. Foster) 1912 equestrian
(silver/gold) Glenn Hardin (a.k.a. Foster) 1932; 1936 400 m hurdles
Pulitzer Award Winners:
1 winner
David Foster Wallace 2012 The Pale King