Gerson Ben Judah, a rabbi of France, distinguished by the appellations Rabbenu (our master), Hazzaken (the old man), and Meor haggolah (light of the exiled), horn in Germany about 960, died about 1030. He wrote a commentary on the Talmud, of which only slight, fragments remain, and is celebrated for the introduction of various reforms among the European Jews, including the abolition of polygamy and repudiation, known under the name of "institutions (gezcroth) of Rabbenu Gerson."