Theresa of Portugal (Portuguese: Teresa or Tereza, [tɨˈɾezɐ]; Archaic Portuguese: Tarasia; 1151 – 1218) was Countess of Flanders by marriage to Philip I, Count of Flanders, and Duchess of Burgundy by marriage to Odo III, Duke of Burgundy. She was the daughter of the Portuguese king Afonso I and Matilda of Savoy. She served as co-regent of Portugal with her brother during the illness of their father Afonso I of Portugal from 1172 until 1173, and regent of Flanders in 1191 during the interim period after the death of her spouse and the accession of his heir.
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- ⭐ Core Definition: Theresa of Portugal, Countess of Flanders
- Theresa of Portugal, Countess of Flanders in the context of Portuguese House of Burgundy
Theresa of Portugal, Countess of Flanders in the context of Portuguese House of Burgundy
The Portuguese House of Burgundy (Portuguese: Casa de Borgonha) was a Portuguese noble house that ruled the County and later Kingdom of Portugal from its founding until the 1383–85 Portuguese Interregnum.
The house was founded by Henry of Burgundy, who became Count of Portugal in 1096. His son, Afonso Henriques, was proclaimed King of Portugal following his victory at the Battle of Ourique in 1139, establishing the Afonsine dynasty (Dinastia Afonsina). Burgundian monarchs would rule Portugal through much of its early formation, including the formalization of the Portuguese language under King Dinis I, the first Portuguese parliament, under King Afonso II, and the conquest of the Kingdom of the Algarve, under King Afonso III. Numerous princes of the house took up thrones across Europe, such as Ferdinand I, Count of Flanders and Peter I, Count of Urgell. Similarly, many princesses became royal consorts, including Berengaria, Queen of Denmark, Leonor, Queen of Aragon, and Teresa, Duchess of Burgundy, among others.
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