Wikipedia
Carreglwyd is a Georgian country house and estate, situated to the northwest of Llanfaethlu, Anglesey, Wales. The house became a Grade II* listed building on 8 January 1952.
The earliest mention of the estate is in 1544, when William Griffiths, the Rector of Llanfaethlu, whose ancestors were the Griffiths family of Penrhyn, bought a house named "Ty'n y Pant". His grandson, the Chancellor William Griffiths, overlooked the building of a new house on the site in 1634. Another William Griffiths, the Chancellor's grandson, made further alterations in the late 17th century and early 18th century, the oldest of which remains in the southwest side of the house. The fine hall of the house dates to this period. During the ownership of Holland Griffiths (1756-1839) in the late 18th and early 19th century, further remodelling of the estate was conducted, during which time the dining room, sitting room and library were given a major renovation. The interior was updated in the 1980s.