LEISTNER - Robert J. September 5, 1941 - July 17, 2026 Of Depew, NY. Beloved husband of the late Betty R. (Rejnal) Leistner; dearest father of Carrie M. (David) Joseph; grandfather of Iris L. Joseph; loving son of the late John W. and Carrie (Relich) Leistner. No prior visitation. A Celebration of Life Service will be held at the convenience of the family. Mr. Leistner was a US Army Veteran of the Vietnam War. Memorial contributions may be made to the Wounded Warrior Project. Arrangements by: CASTIGLIA FUNERAL HOME, INC., 873 Abbott Rd., South Buffalo, NY, 716-824-6435. Please share your condolences at: www.castigliafuneralhome.com