The Peace of Nikolsburg or Peace of Mikulov, signed on 31 December 1621 in Nikolsburg, Moravia (now Mikulov in the Czech Republic), was the treaty which ended the war between Prince Gabriel Bethlen of Transylvania and Emperor Ferdinand II of the Holy Roman Empire. The chief negotiators of the treaty were Maximilian von und zu Trauttmansdorff and Nikolaus Esterházy de Galántha.[1][2]