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| Theresa of Portugal | |
|---|---|
 Theresa's effigy in a seal | |
| Countess consort of Flanders | |
| Tenure | 1183–1191 |
| Duchess consort of Burgundy | |
| Tenure | 1194–1195 |
| Born | 1151 Coimbra, Kingdom of Portugal |
| Died | 6 May 1218 (aged 66–67) Veurne, Flanders |
| Burial | |
| Spouse | Philip I, Count of Flanders Odo III, Duke of Burgundy |
| House | Portuguese House of Burgundy |
| Father | Afonso I of Portugal |
| Mother | Maud of Savoy |
Theresa of Portugal[a] (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.
- ^ Nicholas 1992, p. 73.
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