Afonso III of Portugal

Afonso III
D. Afonso III de Portugal - The Portuguese Genealogy (Genealogia dos Reis de Portugal).png
King Afonso in Genealogia dos Reis de Portugal (António de Holanda; 1530-1534)
King of Portugal
Reign4 January 1248 – 16 February 1279
PredecessorSancho II
Born5 May 1210
Coimbra, Kingdom of Portugal
Died16 February 1279 (aged 68)
Alcobaça, Kingdom of Portugal
SpouseMatilda II of Boulogne
Beatrice of Castile
Denis of Portugal
Afonso of Portalegre
(illeg.) Martim Afonso Chichorro
(illeg.) Urraca Afonso
FatherAfonso II of Portugal
MotherUrraca of Castile

Afonso III (Portuguese pronunciation: [ɐˈfõsu]; rare English alternatives: Alphonzo or Alphonse), or Affonso (Archaic Portuguese), Alfonso or Alphonso (Portuguese-Galician) or Alphonsus (Latin), the Boulonnais (Port. o Bolonhês), King of Portugal (5 May 1210 – 16 February 1279) was the first to use the title King of Portugal and the Algarve, from 1249. He was the second son of King Afonso II of Portugal and his wife, Urraca of Castile; he succeeded his brother, King Sancho II of Portugal, who died on 4 January 1248.[1]

Early life

Afonso was born in Coimbra. As the second son of King Afonso II of Portugal, he was not expected to inherit the throne, which was destined to go to his elder brother Sancho.[2]

He lived mostly in France, where he married Matilda, the heiress of Boulogne, in 1238, thereby becoming Count of Boulogne, Mortain, Aumale and Dammartin-en-Goële jure uxoris.[3]