Age 80, of Mt. Lebanon, peacefully on Thursday, June 25, 2020. Beloved husband of the late Linda A. (McGrew) Diomataris. Dear father of Steve (Ashlee) Diomataris. Loving grandfather of Annika and Kieran. Brother of Kathy Pascaris. Gus was a retired Spanish teacher for over 30 years and will be sorely missed. Friends welcome Tuesday 6-8 p.m. at WILLIAM SLATER II FUNERAL SERVICE, 1650 Greentree Rd., Scott Twp., 15220. Funeral Service Wednesday PRIVATE FOR FAMILY ONLY in Holy Cross Greek Orthodox Church. In lieu of flowers, memorial donations to Holy Cross Greek Orthodox Church. www.slaterfueral.com