Wenceslaus I of Cieszyn (, , ; 1413/18 â 1474), was a Duke of Cieszyn from 1431 (until 1442 with his brothers as co-rulers), Duke of half of Bytom during 1431âÂÂ1452 (returned to him soon after until 1459) and Duke of Siewierz (until 1443).
He was the oldest son of Duke Bolesà Âaw I of Cieszyn by his second wife Euphemia, daughter of Duke Siemowit IV of Masovia.
After the death of his father in 1431, and although he was legally an adult and able to govern by himself, Wenceslaus remained under the tutelage of his mother, together with his younger brothers, who were his co-rulers.
Linked to the imperial court of Sigismund of Luxembourg, in 1438 Wenceslaus paid tribute to the Emperor. In the same year, he obtained for Cieszyn the right of minting his coins.
Despite maintaining good relations with Emperor Sigismund, in 1434, Wenceslaus became involved with the Hussites, particularly aiding the Burgrave of BÃÂdzin, Mikoà Âaj Kornicz Siestrzeniec, in his campaigns against the Bishops of Kraków in the Kingdom of Poland. It was only after Krystyna Koziegà Âowski's retaliatory expedition to Gliwice that Wenceslaus withdrew his support and made an agreement with Poland at the congress in BÃÂdzin on 15 October 1434.
On 17 February 1439, Wenceslaus married Elisabeth (b. 1 May/29 September 1403 - d. Legnica, 31 October 1449), daughter of Frederick I, Elector of Brandenburg and widow of Louis II, Duke of Brzeg-Legnica. According to the chronicler Ambrose of Byczyny, the wedding took place two months before, on 9 December 1438 in Wrocà Âaw; however, after further research, historians believed that this date wasn't the proper marriage ceremony but only the engagement. Elisabeth is mentioned as Duchess of Cieszyn for the first time on 5 March 1439.
After six years of childless union, they were separated ca. 1445 for undisclosed reasons. Elisabeth returned to Legnica, where she died four years later, in 1449. Wenceslaus never remarried.
On 29 November 1442, Wenceslaus finally succumbed to the pressure of his brothers and agreed to the division of their lands. However, the newly created Duchies were unequal, because Wenceslaus retained in their hands most of the territories, giving to his brothers only half of both Gà Âogów and à Âcinawa (who were seriously in debt) and some parts of Cieszyn, and also retained the full authority over Bytom and Siewierz.
These actions, however, didn't resolve the financial difficulties of Wenceslaus. For this reason, on 24 December 1443, he sold the Duchy of Siewierz to Zbigniew Oleà Ânicki, Bishop of Kraków (and from them, that land wasn't treated as part of Silesia). This step only provides liquidity to Wenceslaus for a while. The sale of Siewierz caused a long-lasting dispute between Wenceslaus and Duke Bolko V of Gà Âogów, who didn't accept the transaction. Ultimately, the conflict was ended by 1 July 1457 when Wenceslaus agreed with Poland.
In 1452 he swapped Bytom for Bielsko with his brother Bolesà Âaw II. After Bolesà Âaw II's death later in that year, Wenceslaus took the guardianship of his children. This enabled him to re-acquire Bytom. In 1459, Wenceslaus sold Bytom to Duke Konrad IX of Oleà Ânica in the amount of 1,700 fines.
During the 1460s, the political activity of Wenceslaus was significantly limited. In 1468, the childless Duke abdicated in favor of his nephew Casimir II the rule over Cieszyn (although the real power was held by Wenceslaus's brother Przemysà Âaw II).
In 1471 Wenceslaus obtained the sole authority over Bielsko, after supporting the candidacy of Wà Âadysà Âaw II as King of Bohemia.
Wenceslaus died in Bielsko in 1474. He is buried in the Dominican church in Cieszyn.
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