How can I find information on my father, he immigrated to Canada from England in 1906 and shortly thereafter took up residence in the U.S.A. using a name not his own?

Donald Williams,

Thanks for getting in touch. That's a tough one, because so many records are indexed to a particular name. Any idea what name he might have used?

I'm going to share this over in the The specified item was not found. page. Let's see if anyone has experience with this kind of dilemma.