Erddig is a country house and estate in the community of Marchwiel, approximately 2 miles south of Wrexham, Wales. It is centred on a country house which dates principally from between 1684 and 1687, when the central block was built by Joshua Edisbury, and the 1720s, when the flanking wings were added by its second owner, John Meller. Erddig …Erddig is a country house and estate in the community of Marchwiel, approximately 2 miles south of Wrexham, Wales. It is centred on a country house which dates principally from between 1684 and 1687, when the central block was built by Joshua Edisbury, and the 1720s, when the flanking wings were added by its second owner, John Meller. Erddig was inherited by Simon Yorke in 1733, and remained in the Yorke family until it was given to the National Trust by Philip Yorke III in 1973.