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
Eleanor de Montfort, Princess of Wales Eleanor de Montfort, Princess of Wales Eleanor de Montfort, Princess of Wales and Lady of Snowdon (1252 – 19 June 1282) was an English noble. She was the daughter of Simon de Montfort, 6th Earl of Leicester and Eleanor of England. She was also the second woman who can be shown to have used the title Princess of Wales. Eleanor's maternal grandparents were John of England and his queen consort Isabella of Angoulême. Her maternal uncles included Henry III of England and Richard, 1st Earl of Cornwall. Her maternal aunts included Joan of England, Queen of Scotland, Isabella of England,