Coat of arms of Edward

The blazon

az. a chev. ar. betw. two mullets in chief or, and, in base, a buck s head, cabossed, of the second, attired gold. — Crest, a buck s head, couped, or.

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.