I went to the jewishgen.org census records for Berkowitz with reference to Ungvar. The parents were:
Ignac Jacob and Hani Lichtman.
My great-grandfather was Moritz/Moses Berkowitz, born around 1855 in Zemplen Magyar. He settled in Wilkes-Barre Pa. Did you have Berkowitz relatives there? The was a big clan of Berkowitz's from Hungary in Wilkes Barre and Scranton that settled in the late 1800's.
Mark Strauss (firstname.lastname@example.org