Mr. Thomas Richard Clayton, 90, of Frederick, died Wednesday, December 19, 2018. Born November 12, 1928 in Pittsburgh, PA. He was the husband of the late Elsie Clayton. Thomas was preceded in death by his son, David Patrick Clayton. He was the son of the late Thomas and Martha Clayton. He is survived by his children, Thomas Clayton and wife Susan, Karen O'Maille and husband Michael, Kathleen Gustafson, James Clayton and wife Denise and Mary Sue Ercoli and husband Peter, Margaret Clayton Brasko and husband Bob, 20 grandchildren, 5 great-grandchildren. A Mass of Christian Burial will be held at noon, on Saturday, December 22, 2018 at St. Ignatius of Loyola Catholic Church, 4103 Prices Distillery Road, Ijamsville, Maryland 21754 . Father Michael Jendrek will officiate. Interment will be held at a later date in Queen of Heaven Cemetery, Canonsburg, PA. In lieu of flowers, memorial contributions may be made to Our Lady of Grace School, 1734 Bower Hill Rd., Pittsburgh, PA 15243.