John I of Portugal
King of Portugal from 1385 to 1433 · Portugal · Politicians · Lived 1357 to 1433 · aged 76
John I of Portugal is read about 658 times a day, in 54 languages.
A typical day, 30 days to 8 October 2026
The middle day of the days counted, so one week of news cannot move it. The line under it is the last 76 days, one point a day.
Something wrong?He won a throne in battle against Castile, then held it for 48 years - longer than any Portuguese king before or since. That reign launched an empire.
Also in Deutsch
Photos 8
_-_Lissabon_Museu_Nacional_de_Arte_Antiga_19-10-2010_16-12-61.jpg?width=1200)
Anoniem - Koning Johan I van Portugal (1450-1500) - Lissabon Museu Nacional de Arte Antiga 19-10-2010 16-12-61
ANTT, Colecção Especial, Caixa 32, doc. 40 - Rodrigo Afonso, 1394.png?width=1200)
D. João I (Colecção de Reis e Rainhas de Portugal, séc. XIX)
History of Abrantes, MIAA 03.jpg?width=1200)
Museu Alberto Sampaio (31)
Museu Alberto Sampaio-Loudel de Dom João I
Portret van Johannes I, koning van Portugal, RP-P-OB-50.062
PRT-25e8Awards
Family
Parents
John I of PortugalPartners
Children
Brothers and sisters
Is this everyone?
Only relatives with a profile here are drawn, so a family can be larger than this. A line here can also be wrong.
Correct this familyAbout this person
John of Aviz was born 11 April 1357, illegitimate and unlikely. A succession crisis gave him his chance: he fought Castile for the crown and won, founding the Aviz dynasty in 1385. The victory preserved Portugal's independence when annexation loomed. His reign stretched to 1433, 48 years that saw the kingdom turn outward - the first moves of overseas expansion happened on his watch. He died 14 August 1433, remembered well enough at home to earn the name João de Boa Memória.
Fame.am measures public visibility signals. It does not measure human value, talent, morality, or credibility.