Russell C. Longenbach, 77, of Bethlehem, passed away peacefully on Thursday, March 19, 2026. Born on September 8, 1948, in Bethlehem, he was the son of the late Woodrow Longenbach and the late Margaret Ruth Longenbach.

Russell proudly served his country as a United States Army Veteran during the Vietnam War, attaining the rank of Specialist 4 (Spc. 4).

He was employed for 47 years as an Instrumentation Technician at Lehigh University, where he was known for his dedication and expertise.

Russell was a longtime member of Bethany United Church of Christ (UCC) in Bethlehem, where he enjoyed participating in the church's dart group and sharing fellowship with friends.

He is survived by his loving wife, Dorothy Longenbach (Sullivan); his stepchildren, Lee Stoudt, and Krista Kopetskie and her husband Mark; and his step-grandchildren, Ava, Matthew, and Cory Loran. He is also survived by his brother, Ronald Longenbach.

In addition to his parents, he was preceded in death by his brothers, Donald and William Longenbach, and his sisters, Linda Dunbar, Evelyn Longenbach, and Phyllis Hamm.

Russell will be remembered as a devoted husband, a faithful church member, a proud veteran, and a dedicated professional who served his community and university with quiet strength and integrity.

Services : A Graveside Service will be held on Tuesday, March 24th at 11:30 AM at Schoenersville Cemetery,2355 Grove Rd, Allentown, PA 18109. Russell's services have been entrusted to Cantelmi Long Funeral Home, Bethlehem.

Contributions : In lieu of flowers, memorial contributions may be made in Russell's name to Wounded Wounded Warrior Project, PO BOX 758516, Topeka, KS 66675 https://www.woundedwarriorproject.org/donate

and/or the Tunnels to Towers Foundation, 2361 Hylan Blvd., Staten Island, NY 10306 https://t2t.org/donate/