1720 - 1786 (19 Iyar 5546) ZERAH BEN MEIR EIDLITZ (Prague)
Rabbi, preacher, and mathematician. Eidlitz, a student of Jonathan Eybeshutz, was renowned for his sermons, some of which were preserved in his Or la-Yesharim. He wrote a textbook on math in both English and Hebrew called Melekhet Mahashev. Wealthy at first, he used his funds to support others. Eventually he lost all his resources but refused to accept any charity for himself.