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
Frederick Ponsonby, 1st Baron Sysonby a British Army general. Lady Caroline, better known to history under her married name of Lady Caroline Lamb, was the wife of the future Prime Minister Lord Melbourne and lover of the poet Lord Byron. This lady was also a key figure in a film – played by Sarah Miles – in 1972. The father of the two siblings, Frederick's great-grandfather, was the 3rd Earl of Bessborough. The man wounded at Waterloo is not to be confused with another Ponsonby depicted on film, his kinsman General Sir William Ponsonby, whose death – possibly due to not risking his best horse