Theresa of Portugal, Queen of León

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Theresa of Portugal
D. Teresa de Portugal, Rainha de Leão - The Portuguese Genealogy (Genealogia dos Reis de Portugal).png
Theresa in Genealogy of the Kings of Portugal (António de Holanda, 1530–1534)
Queen consort of León
Tenure 1191–1195
Born 4 October 1178
Coimbra, Kingdom of Portugal
Died 18 June 1250(1250-06-18) (aged 71)
Lorvão Abbey, Kingdom of Portugal
Burial Lorvão Abbey, Portugal
Spouse Alfonso IX of León
Issue Infanta Sancha
Infanta Dulce
House Portuguese House of Burgundy
Father Sancho I of Portugal
Mother Dulce of Aragon
Religion Roman Catholicism

Theresa of Portugal (European Portuguese: [tɨˈɾezɐ, tɨˈɾezɤ]; October 4, 1178 – June 18, 1250;[1]) was Queen of Léon as the first wife of King Alfonso IX of León. She was born at Coimbra, the oldest daughter of Sancho I of Portugal and Dulce of Aragon.


Theresa [2] was the mother to three of Alfonso's children—two daughters and a son, Ferdinand, who was the heir of the kingdom until his death in 1214—but when her marriage to Alfonso was declared invalid because they were first cousins, she returned to Kingdom of Portugal and lived in the Monastery of Lorvão, formerly under the Benedictine rule, which she converted into a Cistercian convent, with over 300 nuns.

In 1230, Alfonso died after having several children with a second wife, Queen Berengaria of Castile. This second marriage was also annulled because Berengaria was Alfonso's first cousin once removed. With two invalidated marriages, there was dispute among the children as to who would inherit the throne. Theresa stepped in and allowed Ferdinand III of Castile, Berengaria's eldest son, to take the throne of León. After the succession dispute, Theresa returned to Lorvão and finally took her convent vows after years of living as a nun. She died in the convent on June 18, 1250, of natural causes.

On December 13, 1705 Theresa was beatified by Pope Clement XI's papal bull Sollicitudo Pastoralis Offici, along with her sister Sancha of Portugal. Her Catholic feast day is June 17.



  1. ^ Portugal, Medieval Lands
  2. ^ "Teresa | biography - queen of Portugal". Encyclopædia Britannica. Retrieved 2015-11-09. 
Preceded by
Urraca López de Haro
Queen consort of León
Succeeded by
Berenguela of Castile
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