Johannes Crellius, Hans Krell, Jan Crell 1590-1633, was Polish-German philospher, one of chief theologues of Polish brethren. Since 1613 in Academy of Rakow, 1616-1621 rector of the academy, Author of Ad librum Hugonis Grotii quem de satisfactione Christi... (1623), De Deo et eius attributis... (1630), De uno Deo Patre libri duo (1631).