Llangollen Canal agreement had been reached in 1802 on a route from Tilstock Park to Hurleston Junction, on which work started immediately. It was completed on 25 March 1805. In order to keep the system supplied with water, an Act of Parliament obtained in 1804 had authorised the construction of a navigable feeder from the north end of Pontcysyllte aqueduct to LLangollen on onwards to Llantisilo, where the Horseshoe Falls weir would be constructed on the River Dee. Once this opened in 1808, the system was not short of water. The Ellesmere company attempted to buy out the Chester Canal in 1804,
Ladies of Llangollen Newydd is now a museum run by Denbighshire County Council. Butler's Hill, near Plas Newydd, is named in honour of Eleanor Butler. The Ponsonby Arms public house, a Grade II listed building on Mill Street in Llangollen, claims to take its name from Sarah Ponsonby. Ladies of Llangollen The "Ladies of Llangollen", Eleanor Butler and Sarah Ponsonby, were two upper-class Irish women whose relationship during the late 18th and early 19th century scandalized and fascinated their contemporaries. Eleanor Charlotte Butler (11 May 1739 – 2 June 1829) was a member of the Butlers, the Earls (and later Dukes) of Ormond.