John I of Portugal

João I, tenth king of Portugal (in English, John I) (the Good or sometimes, the Great or even the One With Good Memory), was born in Lisbon on April 11 1357 and died in the same city on August 14 1433. He was the natural son of Pedro I by a noble Galician lady called Teresa Lourenço. In 1364 he was created grand-master of the Order of Aviz. He became king of Portugal in 1385, after the 1383-1385 Crisis.

Genealogical Data

João I, acclaimed King of Portugal on 6 April 1385, born in Lisbon on 11 April 1357, and died in Lisbon on 14 August 1433, illegitimate son of Pedro I, King of Portugal, by Teresa Lourenço,

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• married at Oporto on 2 February 1387 Philippa of Lancaster (1359-1415), daughter of John of Gaunt, 1st Duke of Lancaster and Blanche of Lancaster:
• Branca (1388-1389)
• Afonso (1390-1400)
• Duarte, king of Portugal (1391-1438)
• Pedro, Duke of Coimbra (1392-1449, Battle of Alfarrobeira)
• Henrique, the Navigator (1394-1460), duke of Viseu
• Isabel (1397-1471), married to Philip III, duke of Burgundy
• Branca (1398)
• John, Duke of Aveiro (1400-1442), grandfather of Isabella of Castile
• Fernando, the Saint Prince (1402-1433), died in captivity in Fes
• further issue by Inês Pires
• Afonso (1377-1461), first duke of Bragança
• Beatrice, princess of Portugal (ca. 1386-1447), married to Thomas Fitzalan, 12th Earl of Arundel

See also: Kings of Portugal family tree

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