English: Arms of Roger de Mortimer, 1st Baron Mortimer of Chirk (d.1326); Barry of six or and azure on a chief of the first two pallets between two gyrons of the second over all an inescutcheon ermine. Blazoned in the Caerlaverock Roll of 1301. After the death of John de Mortimer, 3rd Baron Mortimer of Chirk (son of Roger de Mortimer, 2nd Baron Mortimer of Chirk (died 1334)), who lived in obscurity near Rochester in Kent, the Barony is presumably in abeyance among his posterity, of whom nothing is known. (Cokayne, G. E.; H. A. Doubleday & Lord Howard de Walden, eds. (1936). The Complete Peerage, or a history of the House of Lords and all its members from the earliest times (Moels to Nuneham). 9 (2nd ed.). London: The St. Catherine Press, p.255). However the arms of Mortimer of Chirk were subsequently quartered by West, Baron De La Warr, as shown in the heraldry of Robert Dudley, 1st Earl of Leicester.