Abraham ben Samuel Abulafia was the founder of the school of "Prophetic Kabbalah". He was born in Zaragoza, Spain, in 1240, and is assumed to have died sometime after 1291 following a stay on the small and windswept island of Comino.

Shlomo ben Avraham ibn Aderet was a medieval rabbi, halakhist, and Talmudist. He is widely known as the Rashba, the Hebrew acronym of his title and name: Rabbi Shlomo ben Avraham.