Quae exstant opera [Greek & Latin]

Dimensions:
Arms Or two bars azure a chief quarterly azure and gules 1 & 4 two fleurs-de-lis 2 & 3 a lion passant gardant (Manners) impaling gules on a bend between 6 crosses crosslet fitchy argent an escutcheon or a lion rampant pierced through the mouth with an arrow within a double tressure flory counterflory a mullet for difference (Howard) Coronet of a duke Supporters a unicorn (dexter) a lion rampant charged on the shoulder with a mullet (sinister) Order of the Garter Motto POUR Y PARVENIR