JONAS (Arngrimus), a learned Iclander, acquired great reputation by his skill in the sciences, and particularly in astronomy. He was coadjutor to Gundebran de Thorlac, bishop of Hola, in Iceland. He refused that bishopric, after the death of Gundebran; and died in 1649. He wrote several works; the principal of which are, Idea vera Magistratus, and his history and description of Iceland.