I'm looking for the relatives of Alojzy Schreiber. Probably he was my grandmother's Wictoria ...

I'm looking for the relatives of Alojzy Schreiber. Probably he was my grandmother's Wictoria Lachowicz (family name Schreiber)younger brother and was born in Lwów. As far as I know he visited his sister in 1965. I live in Poland and I would like to contact my relatives in the USA.