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 Guelders and Jülich temporarily unified. William was the eldest son of William II, Duke of Jülich and Maria of Guelders, half-sister of Reginald III, Duke of Guelders and Edward, Duke of Guelders. The brothers Edward and Reginald disputed the Duchy, with Edward taking control in 1361, imprisoning his brother. In 1366, Edward violated a peace made with Charles IV, Holy Roman Emperor and Wenceslaus I, Duke of Luxembourg (who was Duke of Brabant by marriage to Joanna, Duchess of Brabant) by not protecting Brabant merchants in the land between the Rhine and the Meuse who were under threat by armed men involved in