Sherman Shumway was a Melmacian who held the rank of Supreme Commander of the Orbit Guard. (ATAS: "Two for the Brig")
His son, later known as Great Grandpa Shumway, was the inventor of extra wide dental floss. (ATAS: "Thank Gordon for Little Girls")
Among his descendants were Grandpa Shumway, as well as Bob, Gordon, Curtis, and Augie Shumway.