Yaakov ben Moshe Levi Moelin was a Talmudist and posek best known for his codification of the customs of the German Jews. He is also known as Maharil - the Hebrew acronym for "Our Teacher, the Rabbi,

The Book of Abramelin tells the story of an Egyptian mage named Abraham, or Abra-Melin, who taught a system of magic to Abraham of Worms, a Jew from Worms, Germany, presumed to have lived from c. 1362