Concur! Before reviewing your tree, I had attempted to prove E. W. Buckmaster's wife was maiden name, Gregory. Childress County is in Texas' Panhandle near the Oklahoma border and geography is one of my "litmus tests" on problem-searches. Mamie aka Birdie's brothers appear to have died outside Texas' borders. Oscar's son, Walter Forga Gregory (17 Jan 1928 - 15 Jan 2006), is buried in Fort Sam Houston National Cemetery but unable to determine where he died.