Again, the same usage obtains in marshalling the arms of _Knights of Orders of Knighthood_ who, when married, bear two Shields grouped together. On the dexter Shield are blazoned the arms of the Knight himself alone; and around this Shield are displayed the insignia of his Order, or Orders, of Knighthood: and on the sinister Shield the arms of the Knight and of his wife are marshalled, but without the knightly insignia. This second Shield is generally environed with decorative foliage. This usage, prevalent in England, is not accepted or adopted by foreign Heralds: nor does it appear to be required by true heraldic principle, or to be strictly in accordance with it. The wife of a Knight shares his knightly title, and takes precedence from her husband’s knightly rank; and a knight, with perfect heraldic consistency, might marshal his own knightly insignia about the Shield which is charged with his own arms and those of his wife, whether united by impalement, or when the latter are borne in pretence: and thus a single Shield would be borne, and there would cease to exist any motive for endeavouring to impart to a second Shield some general resemblance to its companion by wreaths or other unmeaning accessories. There are ancient precedents for the use of a single shield. _Official Arms_ are not hereditary. _Royal Personages_, when married, bear their own arms on a separate Shield; and a second Shield bears the arms of the husband and wife conjoined. The circumstances of every case must exercise a considerable influence in determining the Marshalling of the Accessories of any Shield, Lozenge, or Group. As a general rule, however, the _Helm_ always rests on the chief of the Shield: Commoners, Knights, Baronets, and Peers place their _Crest_ upon the Helm: Peers and Princes place their _Helm_ upon the Coronet, and their Crest is placed upon the Helmet. The SOVEREIGN places the Crest upon the Royal Crown, which is a part of the Royal Crest, and it is unusual to duplicate the Crown by repeating it below the Helmet. The _Mantling_ is displayed from the back of the Helm: it is most effective when simple in its form and adjustment, and when it droops behind the Shield. The _Motto_ is usually placed below the Shield; but if it has special reference to the Crest, above the Crest. A Scottish motto always goes over the Crest. _Supporters_ are usually placed erect, as if in the act of really supporting the Shield: they ought to stand either on an appropriate ground, or on a Gothic basement to the entire Achievement. _Badges_, with all _Official_ and _Knightly Insignia_, and all other _Honourable Insignia_ of every kind, are rightly marshalled in an Achievement of Arms. CHAPTER XII CADENCY _Marks of Cadency are temporary or permanent-- The Label-- The Bordure-- The Bendlet, Barrulet, and Canton-- Change of Tincture-- Secondary Charges-- Single Small Charges-- Differences of Illegitimacy-- Cadency of Crests, Badges, &c.-- Modern Cadency._