Namesakes
Fictional Characters from Television:
2 characters
Jimmy Valmer (a.k.a. Swanson) 1997 South Park 
Ron Swanson 2009 Parks and Recreation
Notable Actors and Entertainers:
3 actors
Gloria Swanson 1899-1983
Kristy Swanson 1969-
Annaleigh Ashford (a.k.a. Swanson) 1985-
Olympic Medalists:
1 gold
(gold) Duane Swanson 1936 basketball