Mary Lou Birgbauer age 89 of Algonac, MI. died September 13, 2019 in Bethal, CT. She was born April 7, 1930 in Detroit, MI. to the late Fred and Minnie Martienssen. She married Gordon J.F. Birgbauer Jr. on January 12, 1957 in Indiana. Mary... View Obituary & Service Information