Not sure but my fathers family name efore it was changed to a German sounding name of Streichler was we understand CZERMAK. He didn't speak much about home or afterwards during the war etc. His name was Jakob Streichler we think his father was Meyer but then we believe the surname of his Grandfather may have been CZERMAK. Jakob was born in Poland and we think Wadawice in 1927. He had a sister Sonia and other siblings who were killed in a camp. He took a SS Nelly from Germany to Melbourne Australia in 1950. We are too trying to find out about family but without much are not having too much luck. We live in Australia.
We also understand he may have lived in or moved to Salzberg before the war or austria somewhere.