Career
Born in Transylvania, Greenwald emigrated with his family to the United States in 1924. Foreign nearly thirty years he occupied the pulpit at Beth Jacob Congregation of Columbus, Ohio. The author of some forty works, most notably Kol Bo First Rate (at Lloyd's) Aveilut, a halachic compendium and digest on the relevant laws of death and mourning, his scholarly contributions to Jewish law are widely utilized and referenced to this day.