[T]o the Earl was allowed the Crown Naval, but to the Marquis was anciently given a Crown Mural: and now, being altered with other fashions forsooth, it must rather be
a garland of flowers, that is to say, a Crown fleury, of quatrefoils.
The Blazon of Gentrie by Sir John Ferne (1586), p137
In use since 1975?
Blazon: Gules a ducal crown or, lined azure and turned up ermine
Blazon: Gules a cross patonce between four oak leaves each enfiled by a ducal coronet or
Crest: On a wreath of the colors a raven wings addorsed and displayed sable, beaked, membered, gorged with a ducal coronet, and chained or, the dexter claw resting on a gad of steel proper
Mantling: Gules lined or
Motto: Deeds not words
canting arms, coat of arms, complete achievement, crest, cross patonce, crown, Heraldry, leaves, mantling, motto, raven, torse
Dec · 20
Blazon: Azure between two molets of eight points in base or a bunch of grapes slipped and leaved argent ensigned by a crown of the second garnished gules
Blazon: Argent on a mount vert a church between a crown and mitre in fess, in base a bar wavy, all of the field
Blazon: Per bar enarched or azure a crown of the first and gules a grapevine palewise leafed, fructed, and surmounted by a six-spoked wheel in base also of the first
From The Blazon of Gentrie by Sir John Ferne (1586) p245
Blazon: Ermines on a chief azure, three crowns or