Alfonso X (also occasionally Alphonso X, Alphonse X, or Alfons X), 23 November 1221 – 4 April 1284, called the Wise (Spanish: el Sabio), was the King of Castile, León and Galicia from 30 May 1252 until his death. He was of the House of Ivrea, a medieval Frankish dynasty of Burgundian origin which rose to prominence in Italy in the tenth century, even briefly holding the Italian throne. They also ruled the County of Burgundy in the eleventh and twelfth centuries. A cadet branch ruled the Kingdom of Galicia from 1111 and the Kingdoms of Castile and León from 1126 until 1369.
Born in Toledo, Spain, Alfonso was the eldest son of Ferdinand III of Castile and Elizabeth (Beatrice) of Swabia. His mother was the paternal cousin of Holy Roman Emperor Frederick II. His maternal grandparents were Philip of Swabia and Irene Angelina. For the first nine years of his life he was only heir to Castile until his father succeeded his own father Alfonso IX of Leon and united the kingdoms of Castile and Leon. Alfonso succeeded his father as King of Castile and León in 1252.
María Alfonso de León, his aunt, illegitimate dau of King Alfonso IX of Leon and Teresa Gil de Soverosa[1]
dau. Berenguela Alfonso of Castile m. aft 1264 Pedro Núñez de Guzmán[1]
The following may be a direct copy/paste from Richardson's book and may need to be edited.
ALFONSO X OF CASTILE-LEON, King of Castile, Leon, Toledo, Galicia, Seville, Cordoba, Murcia, Jaen. and the Algarve, Knt., son and heir by his father's 1st marriage, born at Toledo 23 Nov. 1221. He married at Valladolid 26 Nov. 1248 VIOLANTE (or YOLANDA) OF ARAGON. She was born about 1236. They had five sons, and six daughters. By his mistress, MAYOR GUILLEN DE GUZMAN (died at Alcocer before 1267), he had one illegitimate daughter, Beatris (or Beatriz) Alfonso. By various other mistresses, he also had three illegitimate sons, and two illegitimate daughters. Alfonso was elected King of the Romans in 1257-72. ALFONSO X, King of Castile, Leon, etc., died at Seville 4 (or 21) April 1284. His widow, Violante, died at Roncesvalles in 1300.
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De Castilla y León y de Swabia-1 and Castilla-113 appear to represent the same person because: member incorrectly created profile, biography indicates these are intended to be the same person
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