Ceil (Cecile) Kathleen Timmer of Great Falls passed away peacefully on Friday, Oct. 10, 2025 at Peace Hospice House.
Ceil was born in Seattle, WA, on Oct. 28, 1944 to Anne and Edward DeTour. After the family returned to Montana, Ceil attended school in Boulder and graduated from Jefferson County High School in 1962. She married her high school sweetheart, Marvin Timmer, and they had two sons, Troy and Kirk. They lived in Basin and Boulder before moving in 2007 to Great Falls, where they spent the rest of their years.
Ceil worked at the Boulder River School and Hospital as a laboratory technician. She loved her career, retiring after 30 years. Outside of work, Ceil was busy running, snowshoeing, bowling and playing golf. She and Marvin were always in the stands watching their sons play football, basketball and track in high school, and their biggest pleasure was following the boys as they played football for Montana State University, cheering them on as they played together on the 1984 national championship team. They also enjoyed following their grandsons in all of the sports all the way through college, where Ty played football for the Griz and Trace and Trevan for the Bobcats.
