Mark Theriault Obituary

We announce the death of Mark Theriault of Chino Valley, Arizona, who passed away on September 20, 2026, at the age of 78. Mark will be remembered by family members, friends, and others whose lives were connected in meaningful ways. Leave a sympathy message to the family on the memorial page of Mark Theriault to pay them a last tribute.

He was predeceased by: his parents, Norman Theriault and Olive Theriault of Stoughton. He is survived by: his wife Robin Lee Theriault; his children, Erin Lee Holland (Michael) of Brockton, Melissa Beth Cook (Peter) of Perris, Matthew Persek (Stacy) of Lake Forest and Jason Persek of Westminster, California.; his granddaughters, Hannah Rose Holland of Brockton and Lily Persek of Lake Forest, California.; and his siblings, Janice McMurdy (Bruce) of Palm Bay, James Theriault (Lorraine) of Bourne, Denise Peterson (David) of Stoughton, Michelle Pimental (Paul) of Berlin, Vermont and Scott Theriault of Buena Park, California..

In lieu of flowers, donations in Mark's memory may be made to the American Cancer Society (https://donate.cancer.org) at https://donate.cancer.org., and at the US Department of Veteran Affairs at https://www.cdceportal.va.gov. Consider a donation, as requested by the family.