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.
Lord George Wellesley Military Cross in 1916. Lord Arthur Wellesley married Louise Nesta Pamela FitzGerald, daughter of Sir Maurice FitzGerald, 2nd Baronet, and Amelia Catherine Bischoffsheim, on 12 March 1917 at Saint Thomas Church in Manhattan, New York City. She was the widow of his elder brother Richard. Lord Arthur Wellesley was appointed a wing commander in the RFC, with the temporary rank of lieutenant colonel, on 1 October 1917. He gained the rank of squadron leader in 1939 in the service of the Royal Air Force Volunteer Reserve (RAFVR). He fought in the Second World War between 1939 and 1945. He was