Arthur Wellesley, 5th Duke of Wellington married, in 1909, Hon. Lilian Maud Glen Coats, daughter of George Coats, 1st Baron Glentanar. They had two children: Arthur Wellesley, 5th Duke of Wellington Arthur Charles Wellesley, 5th Duke of Wellington, (9 June 1876 – 11 December 1941), known as Arthur Wellesley from 1876 to 1900, and as Marquess of Douro from 1900 to 1934, was a British nobleman and landowner. Wellesley was the son of Lord Arthur Charles Wellesley and his wife Kathleen Bulkeley Williams. His father inherited the title and vast Wellington estates on his older brother's death in 1900, and became the 4th Duke of Wellington.
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.