German author and translator; born in the district of Breisgau 1555; died 1598. In 1583 he went to Frankfort-on-the-Main, but was obliged to leave that city on account of the plague. While on the road he composed his "Ohel Ya'aḳob" (Freiburg, 1584), a commentary on the "'Iḳḳarim" of Joseph Albo.

He published also: a Judæo-German translation of the Five Megillot, with the Targum Sheni to Esther (ib. 1583); a translation in Yiddish of Berechiah ha-Naḳdan's "Mishle Shu'alim" (ib. 1588); and "'Omeḳ Halakah" (Cracow, 1598), expositions of mathematical passages in the Talmud illustrated by figures (this book received the approval of the Council of Four Lands).

  • Fuenn, Keneset Yisrael, p. 540, Warsaw, 1886;
  • Steinschneider, Cat. Bodl. col. 1252;
  • Nepi-Ghirondi, Toledot Gedole Yisrael, p. 198, Triest, 1853.
D. B. Fr.
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