Isaac married Yetta abt 1902 and emigrated from Iasi Romania in 1903. Their sons were Willie & Arthur (twins), Ruth (born Rose), Dave, and a younger daughter who died when she was a child.The family lived in NJ and then Brooklyn. In their later years Isaac and Yetta moved to Miami Beach.
My grandfather William's birth certificate says his name was "Herskovitz".
My mom has told me that her grandmother Yetta once told her Isaac fled Poland to avoid having to serve in the army there (I guess they were recruiting teenage boys?).