Parc is the name of an ancient mansion found near the village of Croesor in the community of Llanfrothen near Penrhyndeudraeth, in Gwynedd, Wales. The former mansion has been in ruins since the end of the 17th century when the resident Anwyl Family moved to Llugwy. Thomas Nicholas described the site in his Annals and Antiquities of the Counties and County Families of Wales [see box].