William Williams, a relative of
Anne Boleyn, was the owner in the 13th or 14th century. In 1815, George Griffies-Williams was created a
baronet, and Llwynywermod became the seat of the
Griffies-Williams baronets,
General Sir Watkin Lewis Griffies Williams (1800–1877) was born at the family estate; he was the 3rd and last Baronet of the Griffies-Williams Baronetcy and also an officer in the British Indian Army. In November 2006, Llwynywermod was purchased by the
Duchy of Cornwall as a residence for the Duke of Cornwall in Wales. Charles continued to pay rent on the property after his accession to the throne in 2022, despite the Duchy of Cornwall passing to his son
Prince William. In June 2023 it was reported that the King would not be renewing the lease on Llwynywermod after that summer, as he was unlikely to use it the same way as previously. ==Buildings==