Rabbi Gershom

Rabbi Gershom, often referred to as Rabbi Gershom ben Judah, was a medieval Jewish scholar who lived in the 10th century. He is best known for his role as a leading authority in Jewish law and for instituting several important reforms in Jewish practice, including the prohibition of polygamy among Ashkenazi Jews. His legal decisions and teachings laid the groundwork for many aspects of Jewish law and community life, and he is revered as one of the foremost sages of his time.