Is B.J. Schwartz his brother? Both are buried in Shaare Torah. Both have a father Morris/Moshe. Nathan's obit says he had a brother Ben (and Ben is still alive then), but doesn't provide any geography (other brothers Harry, Jacob).
~~Connected to the early death Goldie Schwartz?~~ No, she was Hungarian
~~Or Emanuel his bro, since same address in 1906? (Different fathers' names.)~~ No, he was Hungarian