Bonnie L. Kostuch
December 11, 1933 - June 14, 2019
Bonnie L. Kostuch, 85, of Fond du Lac, passed away on Friday, June 14, 2019, at St. Agnes Hospital. She was born on December 11, 1933, in Fond du Lac, the daughter of James and Goldie Bellmer Thayer. Bonnie was a graduate of Horace Mann High... View Obituary & Service Information
