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
Maria Ponsonby, Viscountess Duncannon by their eldest son, John, and subsequently by their younger sons Frederick and Walter. Maria Ponsonby, Viscountess Duncannon Maria Ponsonby, Viscountess Duncannon (11 May 1787 – 19 March 1834), formerly Lady Maria Fane, was the wife of John Ponsonby, 4th Earl of Bessborough. She died before he inherited the earldom and thus was never Countess of Bessborough, but three of her sons were successively earls of Bessborough. She was the daughter of John Fane, 10th Earl of Westmorland, and his first wife, the former Sarah Anne Child. Her brother was John Fane, 11th Earl of Westmorland, and her sisters were