Conflicts & Resolutions · Crisis · War

1383–1385 Portuguese interregnum

1383–1385 · 14th century · Also known as 1383–1385 crisis

The 1383–1385 Portuguese interregnum was a succession crisis and civil war in Portugal after the death of King Ferdinand I without a male heir. His daughter Beatrice was married to John I of Castile, but many Portuguese backed John, Master of Aviz; the Cortes of Coimbra proclaimed him king in 1385, and his victory over Castile at Aljubarrota that year secured the throne and founded the House of Aviz.

1383–1385 Portuguese interregnum
Image: Jean d'Wavrin (Chronique d'Angleterre) · Public domain · Wikimedia Commons

Battles and settlements

Cite this entry
APA
The Epoch Institute. (2026). 1383–1385 Portuguese interregnum. In The Epoch Institute Encyclopedia. https://the-epoch-institute.org/encyclopedia/1383-1385-portuguese-interregnum
MLA
“1383–1385 Portuguese interregnum.” The Epoch Institute Encyclopedia, The Epoch Institute, 2026, https://the-epoch-institute.org/encyclopedia/1383-1385-portuguese-interregnum. Accessed .
Chicago
The Epoch Institute. “1383–1385 Portuguese interregnum.” The Epoch Institute Encyclopedia. 2026. https://the-epoch-institute.org/encyclopedia/1383-1385-portuguese-interregnum.
Harvard
The Epoch Institute (2026) ‘1383–1385 Portuguese interregnum’, The Epoch Institute Encyclopedia. Available at: https://the-epoch-institute.org/encyclopedia/1383-1385-portuguese-interregnum (Accessed: ).

Last reviewed October 2026Random entry ↻