ČESKÁ REPUBLIKA	CZECH REPUBLIC
Ústecký kraj	Ústí nad Labem region
Okres: Chomutov

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Kadaň (German: Kaaden) is situated at an elevation of 297 m on the river Ohře (German: Eger) in Western North Bohemia. The first documented mentioning dates from 1183 when the place was conferred to the Order of St. John of Jerusalem which remained in charge of the pastoral care until 1542. By the 12th century, Kadaň had obtained the status of a market town, and in the 13th century it was mentioned as the seat of a burgrave. Around 1260 it obtained the status of a Royal town. This priveledge was confirmed in 1319.

The Peace of Kaaden of 1534 settled the dispute between Duke Ulrich of Württemberg (1498–1550) and Ferdinand I of Habsburg (1503–1564; since 1526 King of Bohemia and Hungary, since 1531 Roman-German King, from 1558 Roman Emperor) about the Württemberg territories ruled by Austria. The contract stipulated that Ulrich obtained Württemberg as fief while Austria retained the sovereignty with the right of co-determination. In case of hostile actions of Württemberg against Habsburg the territories should revert to Austria. (After Ulrich joined the Schmalkalden Alliance in 1536 and the Schmalkalden War of 1546/1547, Württemberg was occupied by the Imperial troops. Ulrich had to accept the occupation in the Treaty of Heilbronn in 1547, and Ferdinand I opened a trial against Ulrich because he had violated the treaty of Kaaden.)