William J. Cosgrove Obituary
It is with deep sorrow that we announce the death of William J. Cosgrove of Rochester, New York, who passed away on February 28, 2026, leaving to mourn family and friends. Leave a sympathy message to the family in the guestbook on this memorial page of William J. Cosgrove to show support.
He was predeceased by: his parents, Ray and Margaret of Hornell, NY; and his siblings, Reverend James Cosgrove and Patricia C. Dunning (Robert). He is survived by: his nieces and nephews, Margaret DiMartino (Anthony), Ray Dunning (Kathleen), Elizabeth Jesserer (William), Robert Dunning (Mary Ellen), Helen Riggio (Michael), William Dunning (Brooke) and Carrie Mathias (William). He is also survived by 10 great-great nieces and nephews, Father leaves behind many close friends.
In lieu of flowers, memorials may be made to the Sisters of St. Joseph's Motherhouse, 150 French Rd. Rochester, NY 14618, Hope Hall School, 1612 Buffalo Rd. Rochester, NY 14624 or Parish of the Holy Family.
