I am looking for information on my great-great grandfather Joseph Sherin. His name was originally Joseph Szonzor and he is from Poland. The name was changed upon entering the US around 1881. We cannot find anything on Szonzor and we cannot confirm the correct spelling. We have been informed that it might have been spelled Gasior in Poland and Szonzor is just a phonetic spelling - English version. Any help anyone might give me would be VERY appreciated.