Dev O'Sullivan Obituary

The family announces the passing of Dev O'Sullivan (Marysville, Ontario) on August 16, 2026. Dev, born on August 23, 1980, was part of many shared moments and relationships throughout life. Leave a sympathy message to the family in the guestbook on this memorial page of Dev O'Sullivan to show support.

Dev will be remembered for the time spent with loved ones and the moments that brought joy to those around him. Friends and family will honour Dev by reflecting on shared memories and the positive influence he had in their lives. Though Dev is no longer present, the bonds he created and the experiences shared will endure. Dev’s memory will continue to be a source of comfort for all who knew him.

He is survived by: his parents, Patricia (Steve) and Barry (Carrie); his children, Gavin and Shyla; and his sisters, Shalagh (Troy) and Shannon (Justin).

In lieu of flowers, donations may be made to Napanee District Secondary School Trades Department or the Deseronto Fire Department.