afterwards again part of the Duchy of Bytom until 1354, later it was also ruled by other regional Polish Piast dukes until 1532, although in 1335 it fell under the suzerainty of the Bohemian Crown, passing with that crown under suzerainty of the Austrian Habsburgs in 1526. According to 14th-century writers, the town seemed defensive in character, when under rule of Siemowit of Bytom. In the Middle Ages the city prospered mainly due to trade and crafts, especially brewing. On 17 April 1433, Gliwice was captured by the Duke Bolko V, who joined the Hussites after they captured Prudnik. Early Modern Age After the dissolution of the Duchy of Opole and Racibórz in 1532, it was incorporated as Gleiwitz into the Habsburg monarchy. Because of the vast expenses incurred by the Habsburg monarchy during their 16th century wars against the Ottoman Empire, Gleiwitz was leased to Friedrich Zettritz for the amount of 14,000 thalers. Although the original lease was for a duration of 18 years, it was renewed in 1580 for 10 years and in 1589 for an additional 18 years. Around 1612, the Reformed Franciscans came from Kraków, and then their monastery and Holy Cross Church were built. The city was besieged or captured by various armies during the Thirty Years' War. In 1645 along with the Duchy of Opole and Racibórz it returned to Poland under the House of Vasa, and in 1666 it fell to Austria again. In 1683 Polish King John III Sobieski stopped in the city before the Battle of Vienna. In the 17th and 18th century, the city's economy switched from trading and brewing beer to clothmaking, which collapsed after the 18th-century Silesian Wars. During the mid 18th century Silesian Wars, Gleiwitz was taken from the Habsburg monarchy by the Kingdom of Prussia along with the majority of Silesia. After the end of the Napoleonic Wars, Gleiwitz was administered in the Prussian district of Tost-Gleiwitz within the Province of Silesia in 1816. The city was incorporated with Prussia into the German Empire in 1871 during the unification of Germany. In 1897 Gleiwitz became its own Stadtkreis, or urban district. Industrialization The first coke-fired blast furnace on the European continent was constructed in Gleiwitz in 1796 under the direction of John Baildon. Gleiwitz began to develop into a major city through industrialization during the 19th century. The town's ironworks fostered the growth of other industrial