Age 100, of Mt. Washington, passed away on Thursday, April 8, 2021. Beloved husband of the late Frances R. Hagan. Loving father of Mary Ann (Dennis) Connolly, Eileen Hagan, Jim (Judy) Hagan, Ellen Hagan and the late Margaret (surviving spouse, John) Warda; cherished grandfather of Maureen (Ian) Dickman, Heidi (Bret) Gordon, Amy (Eric) Manko and Abbey Hagan; also survived by seven great-grandchildren and nieces and nephews. Dennis loved reading books, watching Jeopardy, helping people and talking with everyone about anything and everything. Family and friends welcome Sunday, 3-8 p.m. WM. SLATER & SONS, INC., (412-381-3345) 301 Virginia Ave., Mt. Washington 15211. Funeral Mass Monday 10 a.m. Mary, Queen of Peace Parish, St. Mary of the Mount Church. Burial to follow in Jefferson Memorial Park. Memorials in his name may be made to Fair Oaks, 2200 W. Liberty Ave., Pgh., PA 15226. www.slaterfuneral.com