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John I of Portugal

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Joao I was the natural son of Pedro I by a noble Galician woman named Teresa Lourenço, daughter of Lourenço Martins, o da Praça, and wife Sancha Martins.

By Teresa Lourenço (c. 1330-?)

João (John) April 11, 1357 August 14, 1433

Natural son. Grand Master of the Order of Aviz. Succeeded his half-brother Ferdinand I after the 1383-1385 Crisis as John I, 10th King of Portugal, the first of the House of Aviz.

http://en.wikipedia.org/wiki/Teresa_Louren%C3%A7o

Teresa Gille Lourenço (Lisbon, 1330 - ?), was a common woman from Lisbon, lover of King Peter I of Portugal and mother of King John I of Portugal.

According to Fernão Lopes, a 15th-century Portuguese chronicler, she was a noble called Dona Tareija Lourenço from the Kingdom of Galicia, but later it was established, first in the eighteenth century by António Caetano de Sousa who found a document in the Arquivo Nacional da Torre do Tombo, that she was a common girl from Lisbon.

Her parents were Lourenço and Sancha Martins, who were merchants.

She had a love affair with King Peter I of Portugal after the assassination of Inês de Castro. She became pregnant and gave birth to a son John. King Peter confided the boy to Teresa's father Lourenço, to give the boy a good education and raise him to be a knight.[citation needed] In 1364, John was created Grand Master of the Order of Aviz. He even became King of Portugal in 1385, after the 1383–1385 Crisis.

After the birth of John, nothing is known anymore about Teresa and her relationship to her son and his father or if she ever married.

Through John, Teresa is the ancestor of an impressive list of royals, including Charles the Bold, Isabella I of Castile, Maximilian I, Holy Roman Emperor, Henry the Navigator and Charles V, Holy Roman Emperor, just to name a few.

Biography

Teresa Gille Lourenço was the mistress of Pedro I, King of Portugal after Inês de Castro was beheaded in 1355. She was the mother by him of Joao I Aviz, who eventually succeeded as King of Portugal and Algarve.

Her parentage is unsure, some chroniclers stating she was of common stock,[1] while others state she came from the Galacian nobility, and her parents could be Lourenço Martins, or da Praça, and Sancha Martins.

Her birth date of about 1336 is based on her son's birth date of 11 April 1357. She doesn't appear to be mentioned in any chronicles after this date.

Sources

↑ Wikipedia: Teresa Lourenço Wikipedia: Teresa Lourenço