Sandra L. Theisen

May 18, 1959 - June 2, 2021

Sandra L. Theisen, 62, of Fond du Lac, passed away after a courageous battle with cancer, on Wednesday, June 2, 2021, at her home. She was born on May 18, 1959, in Manitowoc, the daughter of James and Beryl White Kollath. On December 16, 1977, she married Keith A. Theisen, in Fond du Lac. Sandra was a member of the Royal Knights Drum and Bugle Corps, in Manitowoc, and later with the Marquis Drum and Bugle Corps in Fond du Lac. She enjoyed crocheting, watching Little League, cooking and gardening. Sandra was an avid Packer, Brewer and Badger fan. She is survived by her husband Keith Theisen of Fond du Lac, her sons: Timothy (Kim) Theisen and Jason (Tracy) Theisen both of Fond du Lac, her grandchildren: Zachary, Brett, Kristen, Richard, Michael and Josiah; her great-grandson Richard Jr., her mother, Beryl Kollath of Green Bay, her brothers and sisters: Margaret Schuman of Indiana, James Kollath of Manitowoc, David (Jeanne) Kollath of Manitowoc, Tammy (Chad) Kuchinski of Manitowoc and Kim (Jeff) Theisen of Cedarburg. She is further survived by many nieces, nephews and other family members. She is preceded in death by her father James Kollath and her grandson Adrien Barton. VISITATION: Friends may call from 1:00 – 2:00 PM on Monday, June 7, 2021, at Kurki Funeral Chapel & Crematory, 31 East Division Street, Fond du Lac. SERVICE: A memorial service will be held at 2:00 PM on Monday, June 7, 2021 at Kurki Funeral Chapel & Crematory, with Chaplain Karen Kraus officiating. Special thanks to the Agnesian Cancer Center, Agnesian Hospice and U.W. Health, for the care and compassion shown to Sandra and family.