Moses ben Maimon (1138–1204), commonly known as Maimonides and also referred to by the acronym Rambam, was a Sephardic Jewish philosopher who became one of the most prolific and influential Torah scholars of the Middle Ages. In his time, he was also a preeminent astronomer and physician, serving as the personal physician of Saladin. Born in Córdoba within the Almoravid Empire, on Passover eve, 1138, he worked as a rabbi, physician and philosopher in Morocco and Egypt.