Coat of arms of Harlstone

The blazon

ar. a fesse, erm. cottised sa. (quartering Wentworth.) — Crest, out of a ducal coronet or, a stag s head erm. attired of the first, bearing betw. the attires a hawthorn-bush, fructed ppr. [-Borne hy Sir John Harlstone, Governor of Havre-de- Grace, Temp. Edw. IV. and Robert Harlestone, Esq. Secretary to the Master of the Rolls, 1640.]

A blazon is the description of a coat of arms in the technical language of heraldry. The drawing comes from that text, and from nothing else.