William J. (Billy) O'Leary of Clifton Heights, PA passed away peacefully at home surrounded by his family on July 4, 2023, from complications of dementia. He was the son of the late Thomas J. O'Leary, Sr. and the late Elizabeth (nee Whalen) O'Leary. He was the husband of Carol (nee McKeon) O'Leary, loving father of Erin (Michael) O'Kane and devoted Pop-Pop to Billy and Mikey O'Kane and to their dog, Charlie. He is survived by his sisters-in-law Mary (the late Steve) McKeon, Barbara (Kevin) Quinn, Lori (Jim) Callahan and their families. He is also survived by many cousins and dear friends. Billy loved his family and friends, especially his grandsons, Billy and Mikey. He was a lifelong Notre Dame football fan. Billy was loved by many and will be missed by more.

Relatives and friends are invited to his Visitation 9:00 to 10:45 a.m. on Friday, July 7, 2023, St. Dorothy Church, 4910 Township Line Road, Drexel Hill, PA 19026, followed by his Funeral Mass at 11:00 a.m. Interment will be in SS. Peter and Paul Cemetery. Contributions can be made in Billy's name to your favorite charity.