Court Jew who played an important role in the administration of the Kingdom of Castile in the second half of the 15th century. He lived in Segovia and was devoted to the collection of taxes in the last years of Enrique IV. In 1476, he was named greatest Rabbi and judge of the Jews of Castile, and the Kings differentiated him with positions of trust. From his position of wealth and influence, he made as he could to help his Jewish co-religionists who were in material difficulties or endangered by the Inquisition. He participated with Isaac Abravanel in supplies for the campaign of Granada.
In 1492, before the expulsion decree signed by the Catholic monarchs, and under real pressure, almost eighty years, he decided to develop together with his son-in-law Meir Melamed and other members of his family. It took the name of Fernan Nuñez Coronel. He was appointed Alderman of Segovia and other positions of importance were entrusted to him.
BAER,. history of the Jews in Christian Spain. 2 vol. (Madrid: Altalena, 1981).