Hungarian Talmudist and author; flourished at Buda (Ofen) toward the end of the seventeenth century. In 1688, when Buda was taken by the imperial troops, Jonathan was among the captives, but he was ransomed by the Jews of Nikolsburg. Jonathan wrote: "Ḳeset Yehonatan" (Dyhernfurth, 1797), a treatise on morals and asceticism taken from the "Shene Luḥot ha-Berit"; "Sefer Ḥasidim," and other cabalistic works; "Neu Ma'aseh-Buch" (ib. 1797), a collection of Judæo-German stories. He had previously edited the "Ma'amar ha-'Ittim" of Menahem. Azariah di Fano (ib. 1693).