Gerri was born February 21, 1938 in Omaha, Nebraska to Frank and Irene Theisen. She came from a large family of 8 children.
Gerri was a loving Mother, grandmother, and great-grandmother. She loved to spend time with her 6 children and all of her grandchildren. Gerri ran a daycare out of her home for over 40 years, and her daycare families became part of her family.
Preceded in death by her parents Frank and Irene Theisen, sons Chris and Tony Flatt, husband Fred Kleffman, former husband and father of her children Wally Flatt, brothers Robert, William, James, and Richard Theisen, sisters Virginia Hynes, and Esther Smolinski and Grandson Christopher Flatt.
Gerri is survived by son Tom (Kristen) Lawless, daughters, Kelly (Robert) Bukoskie, Lisa Lam (John Thomas) Brianna Kleffman, family friend Ronna Faaborg and many grandchildren and great-grandchildren. She will be greatly missed.