Yaakov Levi Moelin

Leading 14-15th century Halakhic authority, best known for his codification of the customs of German Jewry. Son and pupil of Moshe Levi Moelin, he succeeded his father as Rabbi of Mainz in 1387. "Minhagei Maharil", a compilation of German customs and synagogue rites was written by his student R' Zalman, and is frequently quoted in Rama's glosses to Shulchan Aruch. Another pupil, Eleazer b. Jacob, collected some of Moelin's responsa; these were published in Venice in 1549. Many more of Moelin's responsa which remained in manuscript were recently collected and published under the title "SHu"T Maharil HeChadashot".