Ernest Gruening (1887–1974), grandfather of Clark, American journalist and politician, governor of Alaska Territory 1939-1953, U.S. Senator from Alaska 1959-1969
Clark Gruening was born in San Francisco, California, the son of Huntington Sanders "Hunt" Gruening, the second-born and (after 1955) only surviving son of Ernest Gruening, who at the time of Clark's birth was governor of the Territory of Alaska.