Rabbi Nissim ben Reuven (Ran)
(1320 - 1380)
Rabbi Nissim ben Reuven of Gerona was born in Barcelona.
Ran was considered the greatest Halachic authority of his generation, and queries were sent to him from throughout
His closest disciple was Rivash. Ran's works include
commentaries on the Talmud and on Alfasi's code, responsa, a recently published commentary on the
Bible, and a collection of sermons