L’arrivée d’une dynastie d’origine allemande sur le trône de Grande-Bretagne a renforcé les mariages consanguins.

House of Hanover

Name	Portrait	Birth	Death	Consanguinity
George I 1 August 1714–1727		28 May 1660 Leineschloss son of Ernest Augustus, Elector of Brunswick-Lüneburg and Sophia of Hanover	11 June 1727 Osnabrück aged 67	3,27%
George II 11 June 1727–1760		30 October 1683 Herrenhausen son of George I and Sophia Dorothea of Brunswick-Lueneburg-Celle	25 October 1760 Kensington Palace aged 76	7,72%
George III 25 October 1760–1820		4 June 1738 Norfolk House son of Frederick, Prince of Wales and Princess Augusta of Saxe-Gotha	29 January 1820 Windsor Castle aged 81	2,93%
George IV 29 January 1820–1830		12 August 1762 St James’s Palace son of George III and Charlotte of Mecklenburg-Strelitz	26 June 1830 Windsor aged 67	3,36%
William IV 26 June 1830–1837		21 August 1765 Buckingham Palace son of George III and Charlotte of Mecklenburg-Strelitz	20 June 1837 Windsor Castle aged 71	3,36%
Victoria 20 June 1837–1901		24 May 1819 Kensington Palace daughter of Prince Edward, Duke of Kent and Strathearn and Princess Victoria of Saxe-Coburg-Saalfeld	22 January 1901 Osborne House aged 81	3,06%

House of Saxe-Coburg and Gotha and Windsor

Name	Portrait	Birth	Death	Consanguinity
Edward VII 22 January 1901 – 6 May 1910		9 November 1841 Buckingham Palace son of Victoria and Prince Albert of Saxe-Coburg-Gotha	6 May 1910 Buckingham Palace aged 68	9,88%

George V 6 May 1910 – 20 January 1936		3 June 1865 Marlborough House son of Edward VII and Alexandra of Denmark	20 January 1936 Sandringham House aged 70	3,3%
Edward VIII 20 January – 11 December 1936 (abdicated)		23 June 1894 White Lodge son of George V and Mary of Teck	28 May 1972 Bois de Boulogne aged 77	4,05%
George VI 11 December 1936 – 6 February 1952		14 December 1895 Sandringham son of George V and Mary of Teck	6 February 1952 Sandringham House aged 56	4,05%
Elizabeth II 6 February 1952 – present		21 April 1926 Mayfair daughter of George VI and Elizabeth Bowes-Lyon		insignifiant