Namesakes
Fictional Characters from Song Titles:
1 character
(character) John Sinclair 1972 John Sinclair 
Notable Actors and Entertainers:
1 actor
Vin Diesel (a.k.a. Sinclair) 1967-
Notable Athletes:
1 boxing
(boxing) Floyd Mayweather Jr. (a.k.a. Sinclair) 1977-
Notable Writers:
1 author
Upton Sinclair 1878-1968
Olympic Medalists:
2 bronze
(bronze) Floyd Mayweather Jr. (a.k.a. Sinclair) 1996 boxing
(bronze) Christine Sinclair 2012 football
Pulitzer Award Winners:
1 literature
(literature) Upton Sinclair 1943 Dragon's Teeth