Alfonso X

Alfonso X, El Sabio, the Learned, the Astronomer, or the Wise (November 23, 1221 April 4, 1284) was a king of Galicia, Castile and Len (1252 - 1284). He is perhaps the most interesting, though far from the most capable, of the Spanish kings of the Middle Ages. His nickname "El Sabio" usually means "the Wise", but in his case, a translation "The Learned" is more accurate.