Duke of Wellington (title) Duke of Wellington (title) Duke of Wellington is a title in the Peerage of the United Kingdom. It derived from Wellington in Somerset, and was created for Arthur Wellesley, 1st Marquess of Wellington (born The Hon. Arthur Wesley) (1769–1852), the Anglo-Irish Army leader who is distinguished for leading the decisive victory with Gebhard Leberecht von Blücher over Napoleon Bonaparte's forces at Waterloo in Brabant (now Walloon Brabant, Belgium); Wellesley later served twice as British prime minister. The first duke's father was created the Earl of Mornington and their male-line ancestors were wealthy agricultural and urban landowners in both countries, among
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