Llangollen flow. The bridge was also widened in 1873 and again in 1968, using masonry which blended in with the older structure. It is a Grade I listed structure and a Scheduled Ancient Monument. On the outskirts of the town is Plas Newydd ("New Mansion" or "New Place"), from 1780 the home of the Ladies of Llangollen, the Honourable Sarah Ponsonby, Lady Eleanor Butler and their maid Mary Caryll. The Pillar of Eliseg is another old monument. There is an electoral ward of the same name. This ward includes Llantysilio community and has a total population taken at the 2011 census
William Ponsonby, 1st Baron Ponsonby of Halifax, Sir Alec Douglas-Home and Prince William of Wales. William Ponsonby, 1st Baron Ponsonby William Brabazon Ponsonby, 1st Baron Ponsonby (of Imokilly), PC (Ire) (15 September 1744 – 5 November 1806) was a leading Irish Whig politician, being a member of the Irish House of Commons, and, after 1800, of the United Kingdom parliament. Ponsonby was the son of the Hon. John Ponsonby, the Speaker of the Irish House of Commons and Lady Elizabeth Cavendish, daughter of the 3rd Duke of Devonshire. He was invested as a Privy Counsellor of Ireland in 1784. He served as Joint Postmaster-General of