William Sylvester Flanagan"Wisconsin Birth Index, 1820–1907," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:VHH9-5GF : 4 December 2014), William S Flannigan, 09 Apr 1901; from "Wisconsin Births, 1820–1907," database, Ancestry (http://www.ancestry.com : 2000); citing Green, Wisconsin, reel 0078, Wisconsin Department of Health and Family Services, Vital Records Division, Madison."Wisconsin Births and Christenings, 1826–1926," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:XRJY-SVY : 12 December 2014), Wm. Sylvester Flannigan, 09 Apr 1901; citing Adams, Green, Wisconsin, reference item 1 cn 2417; FHL microfilm 1,302,876. (April 9, 1901 – February 19, 1935) 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 (1865–1939) and Marie Keegan Flanagan (1882–1972). He attended Beloit Memorial High School in Beloit, Wisconsin. He died in 1935.
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