Jacob ben Judah of London

Jacob ben Judah of London was a prominent Jewish legal codifier of the 13th century, based in London, England. He came from a notable family, with his grandfather being Jacob he-Aruk. As a scholar, Jacob ben Judah made significant contributions to the field of Judaism, particularly in the area of Halakah, or Jewish law.

Jacob ben Judah's most notable work is Etz Chaim, a comprehensive ritual code written in 1287. The code is divided into two parts, comprising 646 sections that cover the entirety of Jewish law. In compiling Etz Chaim, Jacob ben Judah drew heavily from influential works such as Maimonides' Mishneh Torah, as well as the Halakot Gedolot and the Siddur of Amram Gaon. He also incorporated the teachings of other prominent scholars, including Moses of Coucy, Alfasi, and the tosafists, demonstrating his thorough understanding of Jewish legal tradition. Additionally, Jacob ben Judah's own poetic verses have survived to this day, showcasing his literary talent.