Rabbanism is the name of a school of Jewish doctors in Spain, which flourished for nine generations, covering the period from the beginning of the 11th century to the end of the 15th, after which they succeeded to the Gaons (q.v.). The founder of this school was rabbi Samuel Hallevi, surnamed Haragid, or the prince, who lived in 1027. The last of the line was rabbi Isaac Aboab, of Castile, who left that. kingdom after the edict of banishment in 1492, and spent the remainder of his life in Portugal. SEE SCHOOLS, HEBREW.