Bill Flanagan (American football)
William Sylvester Flanagan played for the Louisville Colonels of the National Football League during the 1926 NFL season.
Flanagan was born on April 9, 1901, in Green [County, Wisconsin], the son of William H. Flanagan and Marie Keegan Flanagan. He attended Beloit [Memorial High School] in Beloit, Wisconsin. He died in 1935.