William Patrick Hitler est né le 12 mars 1911 à Lancashire, Angleterre, Royaume-Uni. Il était marié à Phyllis Jean-Jacques. Il est mort le 14 juillet 1987 dans l'état de New York, États-Unis.
Son of Alois Hitler. Nephew of Angela Hitler. Alois and Angela were the half-siblings of Adolf Hitler and Paula Wolf. Served in the U.S. Navy (1944-1947) after making a special request to do so to President Franklin D. Roosevelt. Changed his surname to "Stuart-Houston" after he married in an attempt to live in anonymity.