Thank you for your reply. My fathers name was Stephen L. Zupic,My grandfather was also Stephen Zupic. I only have one paternal uncle and his name is John Zupic and he still lives in Brownsville. Any other Zupic surname would probably be my 1st and 2nd cousins.
My e-mail is firstname.lastname@example.org
If you have any information on records from Croatia that would help.
I know of two Great Uncles; Tony and Joe.