Here are some Flanagans buried in Wisconsin (data taken from interment.net).

Wood National Cemetery, Milwaukee, Wisconsin
(this is a veteran’s cemetery and holding just under 37,000 burial plots)

Flanagan, Aloysius Lee, b. 01/12/1887, d. 08/18/1946, Plot: 14 0 731, bur. 08/21/1946
Flanagan, Barney, d. 03/12/1927, Plot: 23 0 229, bur. 03/14/1927
Flanagan, Daniel P, b. 08/07/1892, d. 03/31/1956, Plot: 36 9 5, bur. 04/02/1956
Flanagan, John, d. 10/09/1926, Plot: 24 0 145, bur. 10/12/1926
Flanagan, Robert E, b. 12/24/1922, d. 08/22/1988, US Navy, EN, Plot: H 0 120, bur. 08/29/1988
Flanagan, Thomas J, d. 06/08/1902, Plot: 15 0 264, bur. 06/11/1902
Flanigan, Delbert F, b. 03/22/1920, d. 03/20/1995, US Army, TEC5, Res: Milwaukee, WI, Plot: M 0 83, bur. 03/29/1995
Flanigan, Edward, d. 03/30/1917, Plot: 20 0 288, bur. 04/02/1917
Flannigan, Walter F, b. 06/11/1894, d. 12/11/1961, US Army, SFC, Plot: 38 14 10, bur. 12/14/1961

Southern Wisconsin Veterans Memorial Cemetery, Union Mound, Wisconsin

Flanagan, Daniel Arthur, b. 04/14/1932, d. 06/08/1999, US Army, PFC, Res: Racine, WI, Plot: C7C 6 J, bur. 06/18/1999, [VA]

Not known when this Flanagan was born, when he died, or where he is buried:
Flanagan, Thomas: born = (unknown); died = (unknown)

But he is listed in the 1870 census as follows:
Flanagan, Thomas, husband, 40 years old, born in Canada
Flanagan, Bridget, wife, 40 years old, born in Ireland
Flanagan, Michael, son, 20 years old, born in New York
Flanagan, James, son, 20 years old, born in Ohio
Flanagan, Ellen, daughter, 11 years old, born in Wisconsin
Flanagan, Mary J, daughter, 9 years old, born in Wisconsin
Flanagan, Heamish, ???, 5 years old, born in Wisconsin
Flanagan, Bridget, daughter, 2 years old, born in Wisconsin

He can also be found in the 1860 census as follows:
Flanagan, Thomas, husband, 35 years old, born in Ireland
Flanagan, Bridget, wife, 28 years old, born in Ireland
Flanagan, Michael, son, 10 years old, born in Wisconsin
Flanagan, Maggie G, daughter, 7 years old, born in Wisconsin
Flanagan, Ellen, daughter, 1 years old, born in Wisconsin

If anyone has any information on this Thomas Flanagan or has any recommendations for a good genealogist in Wisconsin please e-mail me here:
dflanagan@austin.rr.com.

Thanks in advance,
Dan Flanagan
Austin, Texas