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John I of Portugal,
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João I, King of Portugal KG (
pron. IPA ), in
English,
John I (
the Good or sometimes,
the Great or even
the One of Good Memory) (
Lisbon,
April 11 1357 –
August 14 1433 in Lisbon) was the 10th
king of Portugal and Algarve and the first to use the title
Lord of Ceuta. 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 and Algarve in
1385, after the
1383–1385 Crisis.
thumb|leftOn the death of his lawful brother
Fernando in October
1383, without a male heir, strenuous efforts were made to secure the succession for princess
Beatrice, his only daughter. As heiress-apparent Beatrice had been married to king
John I of Castile, but the popular voice declared against an arrangement by which Portugal would virtually have become united with Castile. The
1383–1385 Crisis followed as a period of political anarchy, when no king ruled the country.
On
April 6 1385, the council of the kingdom (
cortes in
Portuguese) met in
Coimbra and declared João, then Master of Aviz, king of Portugal. This was in effect a declaration of war against Castile and its claims to the Portuguese throne. Soon after, the king of Castile invaded Portugal, with the purpose of conquering Lisbon and removing João I from the throne.
Juan I was accompanied by
French allied cavalry as
English troops and generals took the side of João (see
Hundred years war). João I then named
Nuno Alvares Pereira, his loyal and talented supporter, general and protector of the Kingdom. The invasion was repelled during the Summer after the
Battle of Atoleiros, but especially after the decisive
battle of Aljubarrota (
August 14,
1385), where the Castilian army was virtually annihilated.
Juan I of Castile then retreated and the stability of João I's throne was permanently secured.
thumb|left|A statue of John in the Praça da Figueira, LisbonIn
1387, João I married
Philippa of Lancaster, daughter of
John of Gaunt who had proved to be a worthy ally, consolidating the union of the
Anglo-Portuguese Alliance that endures to the present day.
After the death of Juan of Castile in
1390, without leaving issue by Beatrice, João I ruled in peace and pursued the economic development of the country. The only significant military action was the siege and conquest of the city of
Ceuta in
1415. By this step he aimed to control navigation of the African coast. But in longer perspective, this was the first step opening the arabian world to medieval Europe, which in fact led to the age of sailing across whole world.
Contemporaneous writers describe him as a man of wit, very keen on concentrating the power on himself, but at the same time with a benevolent and kind personality. His youth education as master of a religious order made him an unusually learned king in the Middle Ages. His love for knowledge and culture was passed to his sons:
Duarte, the future king, was a poet and a writer,
Pedro, the duke of Coimbra, was one of the most learned princes of his time and Prince
Henry the Navigator, the duke of Viseu, started a school of navigation and invested heavily in science and development of nautical topics. In
1430, his only surviving daughter, Isabella, married
Philip III, Duke of Burgundy and enjoyed an extremely refined court in his lands; she was the mother of
Charles the Bold.
Genealogical data
Ancestors
{| class="wikitable"
|+
John's ancestors in three generations|-
|-
| rowspan="8" align="center"|
John I of Portugal| rowspan="4" align="center"|
Father:Peter I of Portugal| rowspan="2" align="center"|
Father's father:Afonso IV of Portugal| align="center"|
Father's father's father:Denis of Portugal|-
| align="center"|
Father's father's mother:Elizabeth of Aragon|-
| rowspan="2" align="center"|
Father's mother:Beatrice of Castile| align="center"|
Father's mother's father:Sancho IV of Castile|-
| align="center"|
Father's mother's mother:María de Molina|-
| rowspan="4" align="center"|
Mother:Teresa Lourenço| rowspan="2" align="center"|
Mother's father:Lourenço Martins| align="center"|
Mother's father's father:Unknown|-
| align="center"|
Mother's father's mother:Unknown|-
| rowspan="2" align="center"|
Mother's mother:Sancha Martins| align="center"|
Mother's mother's father:Unknown|-
| align="center"|
Mother's mother's mother:Unknown|}
Marriages and descendants
João I married at Oporto on
February 2 1387 Philippa of Lancaster, daughter of
John of Gaunt, 1st Duke of Lancaster and Blanche of Lancaster. From that marriage were born several famous princes and princesses of Portugal (
Infantes) that became known as the Ilustrous Generation (
Portuguese:
Ínclita Geração).
{| border=1 style="border-collapse: collapse;"
|- bgcolor=cccccc
!Name!!Birth!!Death!!Notes
|-
|colspan=4|
By Philippa of Lancaster (
1359–
July 19 1415; married on
February 2 1387)
|-
|Princess Branca||
July 30 1388||March
1389||Crown Princess of Portugal (1288-1389)
|-
|Prince Afonso||
July 30 1390||
December 22 1390||Crown Prince of Portugal (1390)
|-
|
Edward I||
October 31 1391||
September 13 1438||Who succeeded him as 11th
King of Portugal.
|-
|
Infante Pedro||
December 9 1392||
May 20 1449||
Duke of Coimbra. Died in the
Battle of Alfarrobeira.
|-
|
Infante Henrique||
December 4 1394||
November 13 1460||Known as Henry the Navigator.
Duke of Viseu and Grand-Master of the
Order of Aviz.
|-
|
Infanta Isabel||
February 11 1397||
December 11 1471||Married to
Philip III, Duke of Burgundy.
|-
|Princess Branca||
1398||
1398||
|-
|
Infante João||
January 13 1400||
October 18 1442||
Duke of Aveiro and grandfather of
Isabella of Castile.
|-
|
Infante Fernando||
1402||
June 5 1443||Died in captivity in
Fes.
|-
|colspan=4|
By Inês Pires (c.
1350–?)
|-
|
Afonso||c.
1380||December
1461||Natural son and 1st
Duke of Braganza.
|-
|
Beatrice||c.
1382||
October 25 1439||Natural daughter. Married first to
Thomas Fitzalan, 12th Earl of Arundel, possibly then to
John Holland, 2nd Duke of Exeter.
|}
s-hou|
House of Aviz|11 April|1357|14 August|1433|
Houses of Capet and
s-bef|before=
1383-1385 interregnum(Beatrice of Portugal,
acclaimed in many places,
rulling with John I of Castile)De facto:
Ferdinand
s-ttl|title=Kings of Portugal|years=
1385–
s-aft|after=
Sources:
Williamson, D. 1988. ‘’Debrett’s Kings and Queens of Europe’’
Category:1357 birthsCategory:1433 deathsCategory:House of LancasterCategory:Portuguese monarchsCategory:Knights of the GarterCategory:House of Avizbg:Жуау Ica:Joan I de Portugalde:Johann I. (Portugal)es:Juan I de Portugalfr:Jean Ier de Portugalit:Giovanni I del Portogallonl:Johan I van Portugalja:ジョアン1世 (ポルトガル王)pl:Jan I Dobrypt:João I de Portugalru:Жуан I (король Португалии)fi:Juhana I (Portugali)sv:Johan I av Portugaluk:Жуан I Великий
