Theresa of Portugal, Countess of Flanders

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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	Clairvaux Abbey, Aube
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.

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