Stanislaw (Stephen) naturalised in Australia in 1913, at which point he said he was from Kamaneth, Russia, having arrived 3rd April 1910. Born 1st October 1882 at Kamaneth Podolak, Russia.
I think the place may be Kamenetz-Podolsk /Kamyanets-Podilsky, and Dembiński and Zakrzewski may be the alternate spellings of the family names.