Coat of arms of Hesketh

The blazon

gu. a chev. betw. three leopards faces or. — Crest, out of a ducal coronet or, two arms, embowed, in armour, the hands ppr. supporting a leopard s face, as in the arms.

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.