Hi steve, I talked with my mother, My grandfather had a cousin Joe who lived in New Kennsington Pa. Does not remember a Max. My grandfather (stanley) had a Brother named walter (never married) and he was in the army and a sister named Sophiehis siblings were born in pittsburgh and my grandfather was born in Poland. His Parents were Walter & Anna. Also, he had a first cousin in Poland who was a Nun (not sure if her name was Sister Domenica(?) or what order she was from.
Hopes this helps you & your wife.
If you want to supply an address my mother could write to you (she does not have a computer).