Treaty of Vienna (1656)

The treaty of Vienna, concluded on 1 December 1656, was an AustroPolish alliance during the Second Northern War.[1] Habsburg emperor Ferdinand III agreed to enter the war on the anti-Swedish side and support the Polish king John II Casimir with 4,000 troops.[1] The treaty was, however, dissatisfying for John II Casimir, who had hoped for more substantial aid, and further ineffective as Ferdinand III died three days after giving his signature.[1] A similar, but more effective alliance was concluded by Ferdinand III's successor Leopold I in the Treaty of Vienna (1657).[1]

Treaty of Vienna
Frans Luycx 002 - Emperor Ferdinand III.jpg
TypeOffensive alliance
Drafted1 December 1656
Signed30 March 1657 (1657-03-30)
LocationVienna, Archduchy of Austria


  1. ^ a b c d Frost, Robert I (2000). The Northern Wars. War, State and Society in Northeastern Europe 1558–1721. Harlow: Longman. p. 179. ISBN 978-0-582-06429-4.