Warmia

Warmia, or Ermland, was a Prussian prince-bishopric whose cathedral chapter sat at Frombork. In 1337 Bishop Herman ruled under the protection of the Teutonic Order.

Warmia’s estates joined the Prussian Confederation in 1440 and sought Polish protection in 1454. The Second Peace of Thorn confirmed Polish rule in 1466; an election dispute then sparked the War of the Priests, settled for Poland in 1479. Prussia took Warmia in 1772 and secularized the bishopric in 1773.