Treaty of Labiau

Treaty of Labiau
Labiau castle
TypeLegal status of the Duchy of Prussia
Signed20 November 1656
LocationLabiau castle (now Polessk)
Signatories
Parties
LanguageLatin

The Treaty of Labiau was a treaty signed between Frederick William I, Elector of Brandenburg and Charles X Gustav of Sweden on 10 November (O.S.)[1] / 20 November (N.S.) 1656 in Labiau (now Polessk). With several concessions, the most important being the elevation of Frederick William I from a Swedish vassal to a full sovereign in the Duchy of Prussia and in Ermland (Ermeland, Warmia), Charles X Gustav strove to "buy Frederick William's support" in the ongoing Second Northern War.[2]

  1. ^ Quaritsch (1986), p. 85
  2. ^ Sturdy (2002), p. 215