Arthur Wellesley, Earl of Mornington Arthur Wellesley, Earl of Mornington Arthur Gerald Wellesley, Earl of Mornington (born 31 January 1978), also known as simply Arthur Mornington, is the elder son of Charles Wellesley, 9th Duke of Wellington. Since 2014, following the succession of his father as Duke of Wellington, he is entitled to the courtesy title of Marquess of Douro but continues to use the title Earl of Mornington. The Wellesleys are an aristocratic Anglo-Irish family. Through his mother, Antonia von Preussen, Duchess of Wellington, he is a great-great-grandson of Kaiser Wilhelm II. As a descendant of Queen Victoria, he is eligible to succeed to
Richard Wellesley, 1st Marquess Wellesley for many years with Hyacinthe-Gabrielle Roland, an actress at the Palais Royal. She had three sons and two daughters by Wellesley before he married her on 29 November 1794. He moved her to London, where Hyacinthe was generally miserable, as she never learned English and she was scorned by high society: Lady Caroline Lamb was warned by her mother-in-law, Elizabeth Milbanke, a noted judge of what was socially acceptable, that no respectable woman could afford to be seen in Hyacinthe's society. Their children were: Through his eldest daughter Lady Charles Bentinck, Wellesley is a great-great-great grandfather to Queen Elizabeth II.