Please answer the following question: Information: - Princess Marie of Saxe-Altenburg, VA (Alexandrina Mary Wilhelmina Catherine Charlotte Theresa Henrietta Louise Pauline Elizabeth Frederica Georgina 14 April 1818 9 January 1907) was Queen of Hanover and the consort of George V, a grandson of George III of the United Kingdom and Queen Charlotte. - Ernst August , Crown Prince of Hanover , Heir of Brunswick , 3rd Duke of Cumberland and Teviotdale ( Ernest Augustus William Adolphus George Frederick ; 21 September 1845 -- 14 November 1923 ) , was the eldest child and only son of George V of Hanover and his wife , Marie of Saxe - Altenburg . Ernst August was deprived of the thrones of Hanover upon its annexation by Prussia in 1866 and later the Duchy of Brunswick in 1884 . Although he was the senior male - line great - grandson of George III , the Duke of Cumberland was deprived of his British peerages and honours for having sided with Germany in World War I. Ernst August was the last Hanoverian prince to hold a British royal title and the Order of the Garter . His descendants are in the line of succession to the British throne . - George III (George William Frederick; 4 June 1738 29 January 1820) was King of Great Britain and Ireland from 25 October 1760 until the union of the two countries on 1 January 1801, after which he was King of the United Kingdom of Great Britain and Ireland until his death. He was concurrently Duke and prince-elector of Brunswick-Luneburg ("Hanover") in the Holy Roman Empire until his promotion to King of Hanover on 12 October 1814. He was the third British monarch of the House of Hanover, but unlike his two predecessors he was born in Britain, spoke English as his first language, and never visited Hanover. What is the relationship between 'prince ernest augustus' and 'house of hanover'?
A:
noble family