Yvonne “Vonnie” Adel Liss, 91, passed away February 24, 2026, at her home in Fairfield, Montana.
Yvonne was born September 18, 1935, in Phoenix, Arizona, to Robert W. Wallet and Olive Ann (McKay) Wallet. She attended and graduated from Westminster High School. Vonnie met Keith S. Liss Sr. in Golden, Colorado, where the couple later married on April 17, 1954. She called many places home, from Phoenix, Arizona, to Golden, Morrison, Castle Rock, and Denver, Colorado, and later to Stevensville, Corvallas, Big Timber, Butte, and finally Fairfield, Montana.
She worked as a bus driver for the Arvada Seventh-day Adventist Church School and was also a CNA in Stevensville. Her greatest accomplishment and favorite job was raising her four boys. As for hobbies, she enjoyed bowling, collecting angels, cooking, and organizing potlucks for the church, and she was known to always have a pet.
Yvonne’s wisdom lives on through her favorite expression, “Life’s good if you don’t weaken.” She also survived a car accident in 1971 that resulted in a lifelong injury.
She is survived by her sons, Keith S. Liss Jr., Daniel T. Liss, Mark G. Liss, and Robert A. Liss; sisters, Judi Wallet, Lynn Niss, and Julie Wallet Schuler; and brother, Bob Wallet. Other survivors include Floyd Liss, Heather Liss, Glenda Dolecheck, Billy Dan Liss, Matthew Liss, Zachary Liss, Trevor Liss, Chad Liss, Andy Liss, Zephyra Liss, Victoria Liss, Taina Liss, David Liss, Steven Liss, Isaac Liss, Jonathan Liss, Ethan Liss, and Abner Liss.
She was preceded in death by her husband, Keith S. Liss Sr., and her sister, Gemma Wallet.
A service will be held March 22, 2026, at 2:00 p.m. at the Stevensville Seventh-day Adventist Church, 3411 Baldwin Rd.
Cremation has taken place under the direction of Frontier Funeral Home in Choteau, Montana.
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