Related to other Mermelsteins? Can't find obit in Pgh papers or Criterion. Given that he spent sig. enough time in NYC to to start his nat., there, I think prob not a brother?
Abraham Lebowitz and Mrs. Sadie Spiegel witnesses on his nat. Wife may be a Lebowitz, brother of Abraham Lebowitz, Allen's grandfather. In which case... is that how he is related?
Guardian for Trau children - named in 9/6/1919 will, so in Hstd earlier than I had thought.