Yitzchak Yisraeli (832-932) played an important role in the development and transmission of ancient Greek medicine and philosophy to the European medieval world.
He was also known as Isaac Israeli ben Solomon, Yitzhak ben Shlomo ha-Yisraeli, Abu Ya’qub Ishaq ibn Suleiman al-Isra’ili, Isaac Israeli the Elder and Isaac Judaeus.
He spent his main years in Kairouan, Tunisia, where he served as physician to Ubayd Allah al-Mahdi Billah, founder of the Fatimid dynasty.
His books were all written in Arabic, but were translated into Latin and brought to Europe by Constantine the African, where they served as texts in the first medical university in Salerna.