John IV, Duke of Brabant (1415–1427) Philip I of Saint-Pol (1427–1430) Philip II the Good (1430–1467) Charles I the Bold (1467–1477) Mary (1477–1482) House of Habsburg Maximilian (regent, 1482–1494) Philip III (1494–1506) Charles II (1506–1555) Philip IV (1555–1598) usurpation by Francis, Duke of Anjou (Valois) (1582–1584) Isabella Clara Eugenia and Albert (1598–1621) Philip V (1621–1665) Charles III (1665–1700) House of Bourbon Philip VI (1700–1706) House of Habsburg and Habsburg-Lorraine Charles IV (1706–1740) Maria Theresa (1740–1780) Joseph (1780–1789) Leopold (1790–1792) Francis I (1792–1794) Dynastic context House of Belgium (House of Saxe-Coburg and Gotha until 1920) In the current Kingdom of Belgium, the title of "Duke of Brabant" has been revived as a dynastic title at the court, and is traditionally assigned to the oldest son or daughter of the sovereign (even though the province of North Brabant, part of the historical duchy, is now part of the Netherlands and has been so since 1648). The oldest son or daughter automatically becomes the duke/duchess of Brabant when his/her father becomes King of the Belgians; there is no ceremony or formal oath that the new duke/duchess must pass. When the Duke of Brabant loses his father, or when he abdicates, his title goes to the next in line, and he becomes the new King of the Belgians. Unlike the office of King of the Belgians, the eldest child of the sovereign does not need to reach the age of 18 to become Duke of Brabant. However, if a Duke or Duchess of Brabant has not reached the age of 18, he or she cannot ascend to the throne of Belgium, as stipulated by the constitution. When the prince or princess becomes duke of Brabant, this title takes precedence of the other titles: Prince or Princess of Belgium. The last Duke of Brabant became King in 2013, and passed the title to his oldest child. The current Duchess, Elisabeth was only 12 years old when she became duchess in 2013. The Dukes and Duchess of the House of Belgium (House of Saxe-Coburg and Gotha until 1920) are as follows: Leopold II (1840–1865) Leopold, son of Leopold II (1865–1869) - the only prince who died a Duke of Brabant. Leopold III (1909–1934) Baudouin (1934–1951) Philippe (1993–2013) Elisabeth (2013–present) Legislation Article 1, alinea 2, of the Royal Decree of 16 December 1840 says, since an amendment in 2001 : “The title of Duke of Brabant or