Charles III William, Margrave of Baden-Durlach Charles III William, Margrave of Baden-Durlach Charles III William (; Durlach, – 12 May 1738, Karlsruhe) was Margrave of Baden-Durlach between 1709 and 1738. He was the son of Margrave Frederick Magnus of Baden-Durlach and Augusta Maria of Schleswig-Holstein-Gottorp. In 1715, he established Karlsruhe ("Charles' repose"), where he built his residence. Karlsruhe has since grown to a large city. With the consolidation of public finances and the creation of a reliable administration, he laid the foundations for the reform policies of his grandson, Charles Frederick. Charles William was born in Durlach as the son of Margrave Frederick Magnus of Baden-Durlach
William I of Württemberg Napoleon I and uncle of French Emperor Napoleon III. "United Kingdom": The British royal family were relatives of William's maternal grandmother Princess Augusta, the elder sister of King George III. George III's eldest daughter Charlotte, was the second wife of Frederick I of Württemberg and thus his stepmother. "Netherlands": Sophie, William's second daughter from his marriage to Catherine, married in 1839 her cousin, William, prince of Orange, who in 1849 became King of the Netherlands. William III was the son of Catherine's sister Anna Pavlovna of Russia. On 8 June 1808, in Munich, he married Caroline Augusta (1792–1873), daughter of