On 30 January 1349, Count Günther XXI of Schwarzburg, an adversary of King Charles IV, was elected and crowned sovereign of Arnstadt in Frankfurt. He renounced this title on 26 May for 20,000 silver marks. A 1404 reference was found in 2000 to Bratwurst originating in Arnstadt, therefore the town claims its invention. In 1496, the Schwarzburg domains were divided into the lordships of Schwarzburg-Rudolstadt and Schwarzburg-Sondershausen, to which Arnstadt belonged. During the German Peasants' War 95 participants in the uprising were beheaded as ringleaders in the Arnstadt marketplace, on 17 June and 2 August 1525. The city was forced to pay 3000 guilders for supporting the insurgents. In 1531 the Reformation was introduced into Arnstadt. As a result, the Franciscan maidens' convent, and subsequently the Franciscan mendicant convent (Barfüßerkloster) were secularized. From 1581 the church of the former Barfüßerkloster (now the Oberkirche) was the main church of the city. In 1553, work began on the count's residence, Neideck Castle. The water palace was completed in 1560.