Perfeddwlad

53°17′13″N 3°45′47″W / 53.287°N 3.763°W / 53.287; -3.763 Perfeddwlad or Y Berfeddwlad was an historic name for the territories in Wales lying between the River Conwy and the River Dee. comprising the cantrefi of Rhos, Rhufoniog, Dyffryn Clwyd and Tegeingl. Perfeddwlad thus was also known as the Four Cantrefs.