Alliance Agreement
John I marries Philippa of Lancaster, daughter of John of Gaunt, who had proved to be a worthy ally, consolidating the Anglo-Portuguese Alliance that endures to the present day
Permanent historical records · Updated 2026-11-03
1387 in Portugal
Explore 4 historical events and records for Portugal in 1387.
Historical records for Portugal in 1387
Sorted by month and day. Records with no month are shown last. Showing 4 of 4 unique records.
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February
Alliance John I and Philippa of Lancaster, daughter of John of Gaunt
John I marries Philippa of Lancaster, daughter of John of Gaunt, who had proved to be a worthy ally, consolidating the Anglo-Portuguese Alliance that endures to the present day
Marriage
John I marries Philippa of Lancaster, daughter of John of Gaunt, who had proved to be a worthy ally, consolidating the Anglo-Portuguese Alliance that endures to the present day
Other events (month unknown)
Marriage
Marries Phillipa, daughter of John of Gaunt
How these records were prepared
Generated from the World History Database historical_events table. Identical display records are collapsed; descriptions otherwise retain the stored text. Coverage and source quality vary. Check primary and specialist sources before citing individual historical claims.