Thanks for your reply, Trimbath is the name of the family that informally adopted my grandfather, he took their surname which is English, unfortunately his original surname is unknown.
I have found numerous US records for this ancestor, beginning in 1917 when he married.
1917 Marriage License birth: Austia
1917 WWI Draft Registration birth: Zara Sigar Austria Hungary
1918-1928 Church records children's baptisms: no birthplace listed
1920 Census: birth Beretski, Austria
1930 Census: birth Czechoslovakia
1936 SSN Application: birth Haston, Cambria Pennsylvania ?
1940 Census: birth Pennsylvania
1942 WWII Draft Registration: birth Cambria County PA
1956 Application for Miners Pension: birth Austria
He was never naturalized (I've checked) and he did not file an Alien Registration Form in the 1940's (I requested and nothing was found)
He might have been Polish or Ruysn, married in Roman Catholic Church but walked to nearby town to attend other (possibly Russian Orthodox or Greek Catholic church, checked for records from each church nothing found.
I have a website with information about him at: http://freepages.genealogy.rootsweb.ancestry.com/~bakerroots...
Also I have considered the town of Zara or Zadar in Dalmatia, however DNA matches are placing him closer to the Ukraine.
Thanks for any help.