John R. Stack

1942 - 2025

John R. Stack, 82, of Canonsburg, passed away peacefully Thursday, March 20, 2025, in UPMC Presbyterian. He was born June 13, 1942, in Canonsburg, a son of the late John Stack and Angeline Courie Stack Weir. John was a 1960 graduate of Chartiers-Houston High School. Following high school, he enlisted in the U.S. Air Force, serving from October 1960 until October of 1964 with over a year spent overseas in Egypt and Pakistan. For 29 years, John worked as a machinist for PA Transformer and Cooper Power Systems in Canonsburg and retired in 2005 from SP Kinney Engineering in Carnegie. Mr. Stack was a member of St. Patrick Church of St. Oscar Romero Parish in Canonsburg. He enjoyed playing cards and spending time with his family, especially his grandchildren. On August 14, 1965, he married Joan Caputo, who died December 26, 2010. Surviving are three children, Lisa Kruger (Colin) of Harrisburg, John Stack of Nashville, Tenn., and Nicole Lane (Kevin) of Bethel Park; six grandchildren, Meghan Hancock (David), Paige Pfeffer (Jesse), Cameron and Madeleine Stack, and Aidan and Nina Lane; a great-granddaughter, Bailey Pfeffer; a brother, Kenneth Stack (Ruth) of Chartiers Township; and several nieces and nephews. In addition to his parents, a brother, Robert Stack, is deceased. Friends will be received from 4 to 7 p.m. Friday, March 28, in the McIlvaine-Speakman Funeral Home Ltd., Robert K. McIlvaine, owner/supervisor, 27 Cherry Avenue, Houston, PA 15342. A Mass of Christian Burial will be celebrated at 10 a.m. Saturday, March 29, in St. Patrick Church of St. Oscar Romero Parish, 317 W. Pike Street, Canonsburg, PA 15317. Interment will follow in Woodruff Memorial Park, Canonsburg. Condolences may be left for the family by viewing the obituary at www.mcilvaine-speakman.com