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
Dorothea of Lorraine Dorothea of Lorraine Dorothea of Lorraine (24 May 1545 – 2 June 1621), was by birth a member of the House of Lorraine and by marriage to Eric II, Duke of Brunswick-Lüneburg, Duchess of Brunswick-Lüneburg-Calenburg. Born at the Château de Deneuvre, she was the third child and second daughter of Francis I, Duke of Lorraine and Christina of Denmark. Her paternal grandparents were Antoine, Duke of Lorraine and Renée of Bourbon-Montpensier and her maternal grandparents were Christian II of Denmark and Isabella of Austria. Dorothea was named after her maternal aunt and she was born crippled or lame, which was