Alfonso's Family Tree

Alfonso IX of León cared enough about his country that he summoned what can be called the first Parliament in Western Europe to hear from all strata of society, but he clearly didn't care enough about the pope's opinion to change his behavior when it came to relationships with women. Although the pope declared his second marriage to Berengaria of Castile as illegitimate (because they were cousins), after declaring his first marriage to Theresa of Portugal as illegitimate (because they were cousins), Alfonso and Berengaria stayed together for years afterward.

His devotion to his second wife, however, was not a sign of dedicated monogamy. He had several children by several mistresses over his lifetime. We know these because, like many kings, he acknowledged them and made sure they had decent careers and marriages themselves.

Between his marriages he had a relationship with Inés Íñiguez de Mendoza. Their daughter, Urraca Alfonso, married the Lord of Biscay. They had many children.

He also had a relationship with Estefanía Pérez de Faiam, the daughter of one of his nobles (who was witness to several royal charters). Alfonso gifted her with many estates. They had a son who died young.

One Spanish historian claims that the archdeacon Fernando Alfonso de León of the Cathedral of Santiago de Compostela was Alfonso's son by a woman named Maura, from Salamanca.

A Portugese woman, Aldonza Martínez de Silva, bore three of Alfonso's children between 1214 and 1218. Rodrigo became lord of Aliger. Aldonza married a count of the kingdom of León. Teresa Alfonso de León married a noble of León, Nuño González "the Good."

A relationship that lasted longer than any of his marriages was with Teresa Gil de Soverosa, daughter of a Portugese noble. They had four children:

• Sancha, who married the Lord of Los Cameros (and later became a nun at a convent which she founded).
• Maria, who was married but later became mistress to Alfonso X of Castile (her cousin).
• Martin, who with his wife founded the Monastery of the Holy Spirit in Salamanca.
• Urraca, who married twice. She was born the year her father died.

Alfonso died on 24 September 1230. His son Ferdinand (by Berengaria) was already King of Castile, and inherited León as well. Castile and León, finally united after the hostilities mentioned in the links above, now dominated the Iberian Peninsula.

At one point in the hostilities, Alfonso of León attacked Alfonso of Castile with the help of Muslims, the Almohads. Who were they, and why would they ally with a Christian king? Why would a Christian king think to recruit them? I'll explain that next time.