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"Ermine, on a chevron azure, three foxes' heads erased, argent. The augmentation is in a canton azure, a fleur-de-lis argent. AUGMENTATION. This word signifies in Heraldry a particular mark of honour, granted by the sovereign in consideration of some noble action, or by favour; and either quartered with the family arms, or on an escutcheon or canton." -Hall, 1862

Augmentation

"Ermine, on a chevron azure, three foxes' heads erased, argent. The augmentation is in a canton azure,…

The heraldic shield of the British Howard family, after its augmentation.

Augmented Shield of Howard

The heraldic shield of the British Howard family, after its augmentation.

The heraldic shield of the family of Pelham, after its augmentation.

Shield of Pelham

The heraldic shield of the family of Pelham, after its augmentation.