Plas Newydd, Llangollen Plas Newydd, Llangollen Plas Newydd (, ; "new hall" or "new mansion") is a historic house in the town of Llangollen, Denbighshire, Wales, and was the home of the Ladies of Llangollen, Lady Eleanor Butler and Sarah Ponsonby, for nearly 50 years. Today, it is run as a museum by Denbighshire County Council. Plas Newydd is notable as the home where two Irish ladies, Lady Eleanor Butler and Miss Sarah Ponsonby (the Ladies of Llangollen) eloped and set up house together in the late 18th century, scandalising contemporary British society. Plas Newydd was originally a five-roomed stone cottage, but over
Wales in the Roman era the consequence of a depopulation in Wales caused by plague or famine, both of which were usually ignored by ancient chroniclers. What is known is that their characteristically Irish circular huts are found where they settled; that the inscription stones found in Wales, whether in Latin or ogham or both, are characteristically Irish; that when both Latin and ogham are present on a stone, the name in the Latin text is given in Brittonic form while the same name is given in Irish form in ogham; and that medieval Welsh royal genealogies include Irish-named ancestors who also appear in the