The coat of arms is a shakefork with a cinquefoil, for Glengarnock: a cross moline within a bordure invected, for Caddel: three stars within a bordure invected, for Muir of Thorntoun; and a crest of a unicorn's head. The motto is "Over fork over" and as such is unchanged from that of the senior branch, the Cunninghames of Kilmaurs, Earls of Glencairn.
