GWILLY (GWILI), a hamlet, joint with Iscoed, in the parish of LLANEDY, hundred of CARNAWLLON, county of CARMARTHEN, SOUTH WALES, 12 miles (N. N. W.) from Swansea. The population is returned with the parish. It is situated on the left bank of the small river Gwili, which joins the river Loughor at no great distance.