Donal Mattias O'Sullivan Obituary
The passing of Donal Mattias O'Sullivan (American Fork, Utah) occurred on August 19, 2026. Donal, born on November 29, 2005 in Boise, Idaho, is remembered by those who knew him. Family and friends are welcome to send flowers or leave their condolences on this memorial page and share them with the family.
Donal touched many lives and will be remembered fondly for the moments shared and the memories created. Family, friends, and colleagues extend their love and support during this time. While Donal’s presence will be missed, the influence he had on others will remain. Those who knew him will carry forward memories that reflect his character and spirit.
He is survived by: his parents, Kieran O'Sullivan and Rebecca Noel Firmage O'Sullivan; his brother Ciaran O'Sullivan; and his grandmother Marvis Firmage. He is also survived by loving aunts, uncles, cousins, and deeply loyal friends.
A celebration of life was held on Monday, August 31st 2026 at 11:00 AM at the Anderson & Sons Mortuary (49 E 100 N, American Fork, UT 84003).
