David Theodore Koman, 75, of Ontario, California, died August 23, 2019. He was born August 26, 1943, in Canonsburg, a son of the late Andrew Koman and Julia Lazorchak Koman. Mr. Koman was a veteran of the Army, serving from 1962-1964. He was Russian Orthodox and worked in retail sales in California. Surviving are a son, Darren William (Lori) Koman of Richmond, Ohio; two brothers, Dennis (Edwina) Koman of Washington and Edward (Donna) Koman of Houston; and five grandchildren, Erika, Donovan, Kyle, Jessika and Bowen. Deceased are a brother, William Koman, and two sisters, Dorothy Telep and Margaret Dichak. Services will be held at 2:00 p.m., Friday, November 1st, in National Cemetery of the Alleghenies, Cecil Township, where military rites will be accorded by American Legion Edwin Scott Linton Post 175.