Geoffrey FitzClarence, 3rd Earl of Munster brother Aubrey. Geoffrey FitzClarence, 3rd Earl of Munster Geoffrey George Gordon FitzClarence, 3rd Earl of Munster, DSO (18 July 1859 – 2 February 1902), known as Lord Tewkesbury 1870–1901, was a British peer, and the great-grandson of King William IV by his mistress Dorothea Jordan. Born Geoffrey George Gordon FitzClarence, he was the son of William FitzClarence, 2nd Earl of Munster (19 May 1824 – 30 April 1901) and Wilhelmina Kennedy-Erskine (27 June 1830 – 9 October 1906). His parents were first cousins, thus making Geoffrey a great-grandson of William IV twice over. His grandfather on his paternal side was
Duchess Maria Dorothea of Württemberg Duchess Maria Dorothea of Württemberg Duchess Maria Dorothea of Württemberg (Maria Dorothea Luise Wilhelmine Caroline; 1 November 1797 in Carlsruhe (now Pokój), Silesia – 30 March 1855 in Pest, Hungary) was the daughter of Duke Louis of Württemberg (1756–1817) and Princess Henriette of Nassau-Weilburg (1780–1857). Maria Dorothea was the eldest of five children born to Duke Louis of Württemberg and his second wife Princess Henriette of Nassau-Weilburg. She was born in Carlsruhe (now Pokój), Silesia, now Poland. Her brother Alexander was the grandfather of Mary of Teck, the future queen consort of George V of the United Kingdom. She was