- Jan 31 Spanish government goes bankrupt
- Mar 3 Dutch privateer Piet Heyn attacks and conquers 22 Portuguese ships in Bay of Salvador, Brazil
- Mar 20 France & Spain sign accord for fighting protestantism
- Jun 10 Dutch privateer Piet Heyn attacks Portuguese ships in the Bay of All Saints, Brazil
Event of Interest
Jul 10 English fleet under George Villiers reach La Rochelle [NS=June 20]
George Villiers
- Jul 12 English fleet under George Villiers lands on the Rhe [NS=June 22]
- Aug 10 Cardinal Richelieu begins siege of La Rochelle
Victory in Battle
Aug 19 Prince Frederick Henry conquers fort Groenlo
Frederick Henry
- Oct 27 English assault on French Il de Ré
- Nov 8 English fleet under George Villiers leaves Île de Ré