Bonnie M. Rennhack, age 81 of Fond du Lac and formerly of Beaver Dam, passed away on Monday, November 3, 2025 at St. Agnes Hospital in Fond du Lac.

Bonnie was born on March 28, 1944, the daughter of John and Mae (Simon) Rennhack. She worked at Walkers in Beaver Dam for 40 years. She loved watching the Packers and visiting Lambeau Field with her daughter. They also enjoyed going to fairs together, and she loved a good Hawaiian party. In her free time, she could often be found coloring on her phone or reading.

Bonnie is survived by her daughter, Melissa Rennhack of Fond du Lac; her dog, Junior; special friends, Melissa Kempfer and Anna Bednar; and further survived by nieces, nephews, other relatives, and friends.

She was preceded in death by her parents; sisters, Carleen and Joyce; brother, Dennis; and other relatives.

Services for Bonnie will be held at a later date.

Cornerstone Funeral & Cremation Service in Beaver Dam is honored to be serving the family.