Quartering

Definition and stakes

Portrait of Arthur Charles Fox-Davies Arthur Charles Fox-Davies,  A Complete Guide to Heraldry

“ The quarter is not often met with in English armory, the best-known instance being the well-known coat of Shirley, Earl Ferrers, viz: Paly of six or and azure, a quarter ermine. The arms of the Earls of Richmond (Fig. 204) supply another instance. Of course as a division of the field under the blazon of "quarterly" (e.g. or and azure) it is constantly to be met with, but a single quarter is rare.
Originally a single quarter was drawn to contain the full fourth part of the shield, but with the more modern tendency to reduce the size of all charges, its area has been somewhat diminished.
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Source: Gutenberg

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