Augusta FitzClarence (17 de noviembre de 1803 - 8 de diciembre de 1865), casada primero con Juan Kennedy-Erskine y luego con Lord Juan Gordon Halyburton. Augusto FitzClarence (1 de marzo de 1805 - 14 de junio de 1854), casado con Sarah Gordon. Amelia FitzClarence (21 de marzo de 1807 - 2 de julio de 1858), casada con Lucius Cary, vizconde Falkland.
William ceased his active service in the Royal Navy in 1790. When Britain declared war on France in 1793, he was eager to serve his country and expected to be given a command but was not, perhaps at first because he had broken his arm by falling down some stairs drunk, but later perhaps because he gave a speech in the House of Lords opposing the war.
A Royal Warrant of Precedence is a warrant issued by the monarch of the United Kingdom to determine precedence amongst individuals or organisations.. Most warrants of this type are issued to grant a rank to a member of the nobility or gentry that they would normally have enjoyed when their relative (usually their sibling) inherits a title, but failed to assume automatically due to such ...
Amelia FitzClarence (21 March 1807 – 2 July 1858), married Lucius Bentinck Cary, 10th Viscount Falkland. During this time, Jordan was granted a yearly stipend of £1,200, though she continued to perform at both Drury Lane and Covent Garden, as well as on provincial tours until her separation with Prince William prior to his marriage to Adelaide of Saxe-Meiningen . 
Elizabeth Hay, Countess of Erroll (née FitzClarence; 17 January 1801 – 16 January 1856) was an illegitimate daughter of King William IV of the United Kingdom and Dorothea Jordan. She married William Hay, 18th Earl of Erroll , and became Countess of Erroll on 4 December 1820  at age 19.
Adelaide of Saxe-Meiningen (Adelaide Amelia Louise Theresa Caroline; 13 August 1792 – 2 December 1849) was Queen of the United Kingdom and Hanover from 26 June 1830 to 20 June 1837 as the wife of King William IV. Adelaide was the daughter of Georg I, Duke of Saxe-Meiningen, and Luise Eleonore of Hohenlohe-Langenburg.
Illegitimate grandchildren. Princess Charlotte, the Prince of Wales's daughter, was, for the whole of her life, the King's only legitimate grandchild.With her death in 1817, the King's unmarried sons scrambled to find appropriate wives from among the German princesses and produce heirs to the throne; but before this, many had been content to keep mistresses or, in the cases of the Prince of ...