Abraham ben Isaac
(c. 13th century)
Abraham ben Isaac of Narbonne, France lived during the middle of the 12th century. He was the leading legalist
and spiritual leader of Provence. Abraham studied under Meshullam b.
Jacob of Lunel. He also spent some time in Barcelona, where he became
very familiar with R. Judah b. Barzillai's work, Sefer Ha-Ittim.
Upon his return to Provence, ben Isaac became the head
of Narbonne's Jewish court. Benjamin MiTudelo described him as head
of his yeshiva. Among his students was Abraham
b. David of Posquieres.
Ben Isaac wrote a commentary on the entire Talmud,
answering many halachic responsa, frequently citing Joseph ibn Migash as an authority.
He is best- known for his book Sefer HaEshkol. In it,
ben Isaac excerpted and summarized the traditions written in Judah b.
Barzilai's voluminous Sefer Ha-Ittim. This introduced Spanish
Jewish customs to southern France. At the same time, ben Isaac included
and incorporated the different rituals and customs of Narbonne. He also
commented on regulations and rituals practiced by North France's Jewry.
He included them as law as he thought best.
Sefer HaEshkol encouraged French Jewry to take
more seriously the scholarship of Spanish Jewry and to see the similarities in their customs and rituals. Ben
Abraham created one of the first cultural and religious bridges between Sephardic and Ashkenazic customs.
Sources: Gates to