Historedia
EuropeEvent

Signing of the Treaty of Sztumska Wieś

When
1635
Where
Sztumska Wieś, Poland
Episodes
1

On 12 September 1635, Sweden and the Polish–Lithuanian Commonwealth signed the Treaty of Stuhmsdorf in Sztumska Wieś. The agreement extended the 1629 Truce of Altmark for 26.5 years. Sweden made significant concessions, while the Commonwealth regained many territories lost during the Polish–Swedish War.

Episodes

  1. 12 September 1635 · Sztumska Wieś, PolandSigning of the Treaty

    The treaty was formally signed on 12 September 1635 in Sztumska Wieś, concluding the negotiations between the two powers.

Background and detail

Background. By 1635, Sweden was weakened by its involvement in the Thirty Years' War, particularly after the defeat at Nördlingen. The Commonwealth faced financial strain from the Smolensk War and the Polish–Ottoman War, coupled with unrest in southeastern provinces requiring significant military presence.

Negotiations. Negotiations began on 24 January 1635 in Preussisch Holland. European powers acted as mediators under the 1629 Truce of Altmark, influencing the outcome. Internal Swedish political struggles between Chancellor Axel Oxenstierna and the Riksdag also shaped the final terms, balancing concessions against maintaining Swedish forces in Germany.

Terms. The treaty extended the Truce of Altmark for 26.5 years. Sweden ceased taxing Polish grain and withdrew from Prussia, ending the blockade of Gdańsk. Brandenburg retained Ducal Prussia, while Sweden's freed troops placed Mecklenburg and Pomerania under Swedish power.

People involved

Sources

  1. Treaty of Stuhmsdorf Wikipedia, revision of 2025-07-19
  2. Polish–Swedish War (1626–1629) Wikipedia, revision of 2026-08-26

Machine-drafted from the cited Wikipedia passages and checked by a reviewing model, not by a human editor. Every passage cites the revision it was written from; dates and places follow those passages.