Klemstine, William J., 72, Pittsburgh, passed away Thursday, October 31, 2024 at North Hills Rehabilitation Center with his loving wife Teresa at his bedside. Born August 27, 1952, Cresson, son of the late Julius and Dorothy (Davis) Klemstine. Also preceded in death by his brother, Joseph; wife's daughter, Nicole; and son-in-law, Donald. Survived by his wife, Teresa, of 21 years; her son that he loved, Michael; cherished grandchildren, Kayla, Alyssa, and Donald Jr; numerous great-grandchildren; a brother, Charles (Marian); sisters, Dorothy, Annie, Sally, and Joan; a nephew, David; nieces, Allison and Kelly; and numerous cousins and friends he met throughout his life journey. William was a 1970 graduate of Penn Cambria High School. He graduated from Penn State in 1974 at later on with a Master's degree in computer programming and science. He was a lifelong fan of the Pittsburgh sports teams and Nittany Lions. William had a great sense of humor and a fun loving personality. He could speak about almost any subject presented to him. Friends and family will be received Wednesday, November 6, 2024 from 4-6 p.m., Anderson Family Funeral Home & Cremation Services, 233 Keystone Ave. Cresson. A funeral Mass will be celebrated Thursday, November 7, 2024 at 10 a.m., St. Aloysius Catholic Church, Fr. Leo Arnone celebrant. Arrangements have been entrusted to Anderson Family Funeral Home & Cremation Services, Cresson, "Honored Provider of Veterans Funeral Care™." Condolences may be made at AndersonFamilyFuneralHomes.com.