William Pole-Tylney-Long-Wellesley, 4th Earl of Mornington a very dissipated life and lived for a time in Brussels to avoid his creditors. In his last years he lived on a small pension of ₤10 a week allowed by his cousin Arthur Wellesley, 2nd Duke of Wellington. From 1842 he was styled Viscount Wellesley, and succeeded his father as Earl of Mornington in 1845. He died in lodgings in Thayer Street, Manchester Square, London, on 1 July 1857, from heart disease. The obituary notice three days later in the "Morning Chronicle" claimed that he was "A spendthrift, a profligate, and a gambler in his youth, he became debauched
Arthur Wellesley, 4th Duke of Wellington member of the Marlborough Club, a gentleman's club. The Duchess died on 24 June 1927 at Apsley House and was interred on 28 June at Stratfield Saye. Wellesley died at Ewhurst Park, Basingstoke, Hampshire, on 18 June (Waterloo Day) 1934, aged eighty-five, and was buried three days later at Stratfield Saye House, Basingstoke, Hampshire, the ancestral home of the Dukes of Wellington. His son, Arthur, succeeded him to the Wellesley family estates and titles. The Duke received the Knight Grand Cross of the Royal Victorian Order (GCVO) on 1 May 1902. He was appointed a Knight of the Order of