Rishonim (Hebrew: [ʁiʃoˈnim]; Hebrew: ראשונים‎‎; sing. Hebrew: ראשון‎‎, Rishon, "the first ones") were the leading rabbis and poskim who lived approximately during the 11th to 15th centuries, in the era before the writing of the Shulchan Aruch (Hebrew: שׁוּלחָן עָרוּך‎‎, "Set Table", a common printed code of Jewish law, 1563 CE) and following the Geonim (589-1038 CE). Rabbinic scholars subsequent to the Shulkhan Arukh are generally known as acharonim ("the latter ones"). The Principles of Jewish Law