not renamed, however, as the "United"-prefix had never been part of its official name, but rather was retrospectively added by historians for descriptive purposes (cf. Weimar Republic). Constitutional changes and abdication in later life Constitutional changes were initiated in 1840 because the terms which involved the United Kingdom of the Netherlands had to be removed. These constitutional changes also included the introduction of judicial ministerial responsibility. Although the policies remained uncontrolled by parliament, the prerogative was controllable now. The very conservative William could not live with these constitutional changes. This, the disappointment about the loss of Belgium, and his intention to marry Henrietta d'Oultremont (paradoxically both "Belgian" and Roman Catholic) made him wish to abdicate. He fulfilled this intent on 7 October 1840 and his eldest son acceded to the throne as king William II. William I died in 1843 in Berlin at the age of 71. Children With his wife Wilhelmina, King William I had six children: Willem Frederik George Lodewijk (b. The Hague, 6 December 1792 – d. Tilburg, 17 March 1849) later King William II of the Netherlands from 1840. Married Grand Duchess Anna Pavlovna of Russia. Stillborn son (Hampton Court, Palace, Middlesex, 18 August 1795). Willem Frederik Karel (b. Berlin, 28 February 1797 – d. Wassenaar, 8 September 1881), married on 21 May 1825 his first cousin Louise, daughter of Frederick William III of Prussia. Wilhelmina Frederika Louise Pauline Charlotte (b. Berlin, 1 March 1800 – d. Freienwalde, 22 December 1806). Stillborn son (Berlin, 30 August 1806). Wilhelmina Frederika Louise Charlotte Marianne (b. Berlin, 9 May 1810 – d. Schloss Reinhartshausen bei Erbach, 29 May 1883), married on 14 September 1830 with Prince Albert of Prussia. They divorced in 1849. Honours and Arms Honours : Founder and Grand Master of the Military Order of William, 30 April 1815 Founder and Grand Master of the Order of the Netherlands Lion, 29 September 1815 Sweden: Knight of the Order of the Seraphim, 14 April 1813 : 876th Knight of the Order of the Golden Fleece, 5 July 1814 : 648th Knight of the Order of the Garter, 10 August 1814 Honorary Knight of the Order of the Bath, 16 August 1814; Grand Cross (military), 2 January 1815 Prussia: Knight of the Order of the Black Eagle, 8 February 1787 Portugal: Grand Cross of the Sash of the Three Orders, October 1825 : Grand Cross of the Order of