William Stack has been often mistaken as British in the scant bio information available on him - he could imitate many a British accent. He was actually born in Oregon. But like many Americans who wished to become serious stage actors and seeing New York as overly competitive, he went to London as a young man. Not much is known about his career there, but with many theaters (almost fifty) and companies around, the opportunities for a talented young man were there. From the craze for post cards with the subject of photos - and especially those of actors that ensued between about 1890 and 1914, there exist pictures of Stack as Hamlet. So Stack did find initial success, and by 1918 he tried his hand in the budding British silent film industry with not much initial interest - just one film that year and another in 1922, then back to the stage.