John I of Portugal

King of Portugal and Algarve

John I of Portugal - Leaders & Politicians born April 11th, 1357
Born
Died
Category

Leaders & Politicians

Country

Portugal

Links & References

Ruled as King of Portugal from 1385 until death in 1433. Achieved significant stability and growth in Portugal during the late 14th and early 15th centuries. Strengthened ties with England through the Treaty of Windsor in 1386. Promoted exploration along the African coast, laying groundwork for future expeditions. His reign marked the beginning of a period of expansion for Portugal as a maritime power.

Secured Portuguese sovereignty at the Battle of Aljubarrota

Established the Avis Dynasty

Strengthened English alliance through the Treaty of Windsor

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