ISAAC, MARC JACOB – French educationist and writer; born March 10, 1828, at Niederhomburg, near Saargemünd, Lorraine. After attending the teachers' seminary at Colmar (1844-47), he taught in several Jewish schools in Alsace, and later in Paris. He...
ISAAC B. MEÏR OF DUEREN – See Dueren, Isaac b. Meïr.
ISAAC BEN MEÏR OF NARBONNE – French liturgical poet of the first half of the twelfth century. He is mentioned as a liturgical poet by Joseph Ḳara in his commentary to Job. He was probably the author of the following five poems: "Yomam 'Enenu," pizmon, in...
ISAAC BEN MELCHIZEDEK OF SIPONTO – Italian rabbi and Talmudist; lived about 1110-70; born in Siponto, a seaport of Apulia and an ancient seat of Jewish learning. His father was known there as an erudite Talmudist and was connected with the bet ha-midrash; Isaac...
ISAAC B. MENAHEM THE GREAT – French Talmudist; flourished in the second half of the eleventh century. Isaac, who lived at Orléans, was a pupil of Eliezer the Great of Mayence, and the teacher of Eliezer ben Judah of Châlons (Gross, "Gallia Judaica," p....
ISAAC BEN MERWAN HA-LEVI – French Talmudist; flourished in the first third of the twelfth century; elder son of Merwan of Narbonne. As highly respected in the community as his father, he was elected rabbi of Narbonne. He is often quoted, his Talmudic...
ISAAC BEN MORDECAI GERSHON – Talmudist of the fifteenth century. He was the author of "Shelom Ester," a commentary on the scroll of Esther (Constantinople, 15th cent.). Steinschneider, in Benjacob's "Oẓar ha-Sefarim" (p. 583, No. 679), attributes to the...