Arthur Wellesley, 5th Duke of Wellington 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. Wellesley attended Eton between 1890 and 1895, and later attended Trinity College at Cambridge. He was commissioned as a
William Wellesley-Pole, 3rd Earl of Mornington 1835 Postmaster-General. From 1838 he held the honorary position of Captain of Deal Castle. On the death in 1842 of his elder brother Richard Wellesley, 1st Marquess Wellesley and 2nd Earl of Mornington, he succeeded as 3rd Earl of Mornington. In 1784 Lord Mornington married Katherine Elizabeth Forbes, daughter of Admiral John Forbes and granddaughter of the George Forbes, 3rd Earl of Granard, and of William Capell, 3rd Earl of Essex. They had the following progeny, one son and three daughters: He died on 22 February 1845. William Wellesley-Pole, 3rd Earl of Mornington William Wellesley-Pole, 3rd Earl of Mornington (20