John IV Biography

Historical biography and chronological timeline for John IV, based on 1 World History Database records associated with Portugal.

1 records1641–16411 events0 places

Chronological biography

1641

Alliance John IV and Sweden1641

House / House of Braganza · King

Signs a Treaty of friendship & commerce with Sweden

Titles and roles

King

Record provenance

This biography is assembled from World History Database records filtered by country and personal-name fields. Exact duplicate display records are removed. The database is an index rather than a complete narrative biography; formal research should verify entries against relevant primary or specialist sources.