Wikipedia
Altranstädt is a village in Saxony, Germany, now part of the Markranstädt district of Leipzig. The village is historically famous for two treaties that were concluded there, the Treaty of Altranstädt (1706) and the Treaty of Altranstädt (1707).
The 1706 treaty was a peace which Augustus II, king of Poland and elector of Saxony, was forced to ratify on 24 September 1706, with Charles XII of Sweden. The former renounced the throne of Poland in favor of Stanislaus Leszczynski's treaty which Augustus declared null and void after Charles XII's defeat at Poltava (8 July 1709). The other treaty was signed on 31 August 1707. Emperor Joseph I guaranteed to Charles XII religious tolerance and liberty of conscience for the Silesian Protestants.
Charles was visited in Altranstädt by John Churchill, 1st Duke of Marlborough on behalf of the Grand Alliance against France. During 1707-08 he persuaded Charles not to support France but to leave Germany, never to return.