Kenneth J. Birrenbach, age 83, of Prairie du Chien, Wisconsin, died peacefully Monday, May 4, 2020 from cancer at his daughter’s house in Cottage Grove, Minnesota. Ken was born on September 21, 1936 in Le Sueur, Minnesota, to John and Ruth (Viehman) Birrenbach. Ken was united in marriage with Dorothy (Schwarz) on February 28, 1956. He was an avid fisherman, gardener and woodworker. He worked as a Chemical Engineer at 3M Company for over 30 years. After retirement, he ran a sewing machine repair business for another 20 years. He was an active member of the Prairie du Chien United Methodist Church, and participated in Volunteers in Missions for over fifteen years. He loved square dancing and playing bridge with Dorothy, and he also enjoyed camping, scuba diving, travelling and playing games with his family. He was a devoted husband, father, grandfather and friend. He will be greatly missed by all who knew him. Ken is survived by his children, Linda (Peter) Staloch of Cottage Grove, Minnesota, Julie (Ben) Baker of West Salem, Wisconsin, Tim (Brenda) Birrenbach of Clinton Corners, New York; twelve grandchildren; nine great-grandchildren; one sister, Myrtle (Bill) Tyra and five nieces and nephews. He was preceded in death by his wife, Dorothy, his parents, and his brother, Harold (Joanne) Birrenbach.A Celebration of Ken's life will take place at a later date.Private interment: Natural Path Sanctuary, Verona, Wisconsin.