Alfonso X, Spanish king of Castile and León

Alfonso X (Alfonso the Wise), 1221–84, Spanish king of Castile and León (1252–84); son and successor of Ferdinand III, whose conquests of the Moors he continued, notably by taking Cádiz (1262). His mother, Beatriz, was a daughter of the German king Philip of Swabia, and Alfonso's principal ambition was to become Holy Roman Emperor. In 1257 he was elected by a faction of German princes as antiking to Richard, earl of Cornwall, but because of papal opposition and Spanish antagonism, he did not go to Germany, and in 1275 he finally renounced his claim to the imperial throne. In his domestic policy, Alfonso's assertion of royal authority led to a rebellion of the nobles. His Moorish subjects also rose (1264) against him and were subdued only with the help of James I of Aragón. After the death (1275) of his eldest son, Ferdinand, while fighting the Moors, civil war for the succession broke out between Ferdinand's children and Alfonso's second son, who eventually succeeded him as Sancho IV. Sancho's partisans in the Cortes at Valladolid even declared Alfonso deposed (1282). The king died while the dynastic dispute was still unsettled. Alfonso stimulated the cultural life of his time. Under his patronage the schools of Seville, Murcia, and Salamanca were furthered, and Muslim and Jewish culture flowed into Western Europe. He was largely responsible for the Siete Partidas, a compilation of the legal knowledge of his time; for the Alfonsine tables Alfonsine tables or Alphonsine tables (ălfŏn`sĭn)
..... Click the link for more information. in astronomy; and for other scientific and historical works.

Bibliography

See studies by E. E. S. Procter (1951), J. E. Keller (1967), and J. Ribera y Tarragó (1970).

Alfonso X

known as Alfonso the Wise

(born Nov. 23, 1221, Burgos, Castile—died April, 2, 1284, Sevilla) King of Castile and León (1252–84). He crushed revolts by Muslims (1252) and nobles (1254), and he annexed Murcia after repelling an invasion by Morocco, Granada, and Murcia (1264). He claimed the title of Holy Roman emperor (1256), but Gregory X persuaded him to renounce the claim. His second son became his successor as Sancho IV. Alfonso's court was a center of culture, producing an influential law code, the Siete Partidas, and establishing the form of modern Castilian Spanish.