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Garry John Denning

December 14, 1957 September 1, 2020
Garry John Denning
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Obituary for Garry John Denning

Garry John Denning, 62, of Great Falls, passed away on Tuesday, September 1, 2020, at his home with his family by his side.

Garry was the son of Richard and Betty Denning, born on December 14, 1957, in Mountain Home, Idaho. He traveled the world when his dad was in the Air Force. Garry came to Great Falls in 1974. He entered the US Army at the age of 17. Following boot camp, he was stationed for three years at Fort Carson, Colorado. Garry returned to Great Falls and worked as a truck driver for AAFES, and then Watkins Shepard Leasing.

On January 14, 1989, he was united in marriage to Ruth Brandt at Peace Lutheran Church. Garry and Ruth moved to Colorado Springs where he attended Colorado Tech. After receiving his Biotech Degree, he returned home to Great Falls.

Garry loved being active, he enjoyed foosball, pool, roller skating, camping, riding his motorcycle, and when he was a teenager he played baseball. He was involved in the Big Sky RC Modelers and the Academy of Model Aeronautics, which he served as president. He was a member of Peace Lutheran Church and served as an usher and trustee during the remodeling and expansion of the church.

He is survived by his wife, Ruth; daughter, Ganetta Ryster and her fiancé, Jared Askeland of Cascade; son, Tyler Denning and his wife, Hunter of Great Falls; brother, Carlyle “Paul” Denning and his wife, Linda of Redding, CA; two grandchildren, Josie Ryster and Jaylen Askeland; and many nieces and nephews. He was preceded in death by his parents and sister, Sherian Horinek.

Cremation has been entrusted to Schnider Funeral Home. A memorial service will be held at 11:00 a.m. on Wednesday, September 9, 2020, at Peace Lutheran Church with Rev. Wade M. Harr officiating. The service will be livestreamed at Condolences for the family may be shared online at

Previous Events

Memorial Service




11:00 AM 9/9/2020 11:00:00 AM
Peace Lutheran Church

3340 11th Ave S
Great Falls, MT 59405

Peace Lutheran Church
3340 11th Ave S Great Falls 59405 MT
United States

Cemetery Details


Highland Cemetery Final Resting Place

Great Falls , MT 59405

Great Falls 59405 MT
United States

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