Through his mother, he is the nephew of Prince Philip, Duke of Edinburgh and is first cousin to Charles, Prince of Wales. He married Archduchess Valerie of Austria, daughter of Archduke Hubert Salvator of Austria and Princess Rosemary of Salm-Salm, civilly on 23 September 1966 in Salem, and religiously on 30 September 1966 in Persenbeug Castle, Austria.
He is the head of the Grand-Ducal House of Baden and the representative of the descent of the Kings of Sweden of the House of Holstein-Gottorp. Berthold II, Duke of Carinthia, daughter 1078 Herman I, Margrave of Baden, 1040–1074 Herman II, Margrave of Baden, 1074–1130 Herman III, Margrave of Baden, daughter
1160 Herman IV, Margrave of Baden, 1135–1190 Herman V, Margrave of Baden-Baden, daughter
1243 Rudolf I, Margrave of Baden-Baden, 1230–1288 Herman VII, Margrave of Baden-Baden, 1266–1291 Rudolf IV, Margrave of Baden-Pforzheim, daughter 1348 Frederick III, Margrave of Baden-Baden, 1327–1353 Rudolf VI, Margrave of Baden-Baden, daughter
1372 Bernard I, Margrave of Baden-Baden, 1364–1431 Jacob, Margrave of Baden-Baden, 1407–1453 Charles I, Margrave of Baden-Baden, 1427–1475 Christopher I, Margrave of Baden-Baden, 1453–1527 Ernest I, Margrave of Baden-Durlach, 1482–1553 Charles II, Margrave of Baden-Durlach, 1529–1577 George Frederick, Margrave of Baden-Durlach, 1573–1638 Frederick V, Margrave of Baden-Durlach, 1594–1659 Frederick VI, Margrave of Baden-Durlach, 1617–1677 Frederick VII Magnus, Margrave of Baden-Durlach, 1647–1709 Charles III William, Margrave of Baden-Durlach, 1679–1738 Hereditary Prince Frederick of Baden-Durlach, 1703–1732 Charles Frederick, Grand Duke of Baden, 1728–1811 Leopold, Grand Duke of Baden, 1790–1852 Prince Wilhelm of Baden, 1829–1897 Prince Maximilian of Baden, 1867–1929 Berthold, Margrave of Baden, 1906–1963 Maximilian, Margrave of Baden, b.
