Coat of arms of Dickens

The blazon

erm. on a cross patonce sa. a leopard s head or. — Crest, a lion, couchant, or, holding out in his gamb a cross patonce sa. { Granted to William Dickens, of London, June, 1625. Heralds' Office, London, C. 24.]

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.