Coat of arms of Duckworth

The blazon

sa. a chev. betw. three cross crosslets, fitchee, ar. — Crest, a man s head, armed with a helmet, the beaver open, allppr. ( Another cxesi, a demi lion, holding a cross crosslet, fitch6e, )

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.