Ahnentafel Marie Auguste Prinzessin von Anhalt Urgroßeltern: Leopold IV. Friedrich von Anhalt-Dessau (1794–1871) ⚭ Friederike von Preußen (1796–1850) Eduard von Sachsen-Altenburg (1804–1852) ⚭ Amalie von Hohenzollern-Sigmaringen (1815–1841) Georg von Sachsen-Altenburg (1796–1853) ⚭ Marie zu Mecklenburg (1803–1862)
William IV (Guillaume Alexander; French: Guillaume Alexandre; 22 April 1852 – 25 February 1912) reigned as the Grand Duke of Luxembourg from 17 November 1905 until his death. He succeeded his father, Adolphe .
William IV (William Henry; 21 August 1765 – 20 June 1837) was King of the United Kingdom of Great Britain and Ireland and King of Hanover from 26 June 1830 until his death in 1837. The third son of George III , William succeeded his elder brother George IV , becoming the last king and penultimate monarch of Britain's House of Hanover .