Thomas G. Derosier Obituary
With solemn hearts, we announce the passing of Thomas G. Derosier (Casper, Wyoming), born in Crookston, Minnesota, whose presence will be deeply missed, having departed on May 3, 2026 at the age of 67. Family and friends can send flowers and condolences in memory of the loved one. Leave a sympathy message to the family on the memorial page of Thomas G. Derosier to pay them a last tribute.
He was predeceased by: his parents, Herbie and Darlene; and his brother Steve. He is survived by: his wife Diane Derosier (Mercil); his children, Matthew (Kelly), Katrina, Brandon, Brittany (Joe), Mimi (Bobby), Alez and Joshua (Angie); his stepchildren, Ross (Laura), Stefanie (John) and Ryan (Meagen); and his siblings, Tony Derosier (Julie) and Debbie Champagne (Randy). He is also survived by 6 grandchildren.
Visitation was held on Friday, May 8th 2026 from 10:30 AM to 12:30 PM at the Newcomer Funeral Home (710 E 2nd St, Casper, WY 82601). A funeral service was held on Friday, May 8th 2026 from 1:00 PM to 2:00 PM at the same location. A graveside service was held on Friday, May 8th 2026 from 2:30 PM to 3:00 PM at the Oregon Trail State Veteran Cemetery (80 Veterans Dr, Evansville, WY 82636). A memorial gathering was held on Friday, May 8th 2026 at 3:00 PM at the Family Home (794 Reshaw Cir, Evansville, WY 82636).
