A Complete Guide to Heraldry by Arthur Charles Fox-Davies

10. Sir John Grey of Ruthin, K.G., 1436-1439. Arms: quarterly, 1 and 4,

barry of six argent and azure, in chief three torteaux; 2 and 3, quarterly i. and iiii., or, a maunch gules; ii. and iii., barry of eight argent and azure, an orle of ten martlets gules; over all a label of three points argent. Crest: on a chapeau gules, turned up ermine, a wyvern or, gorged with a label argent. Mantling or, lined ermine.