Coat of arms of Knowler

The blazon

ar. on a bend, betw, two cottises sa. a lion, passant, guardant, of the field, crowned or. — Crest, a demi hern ppr. volant, issuing out of reeds. (Another crest, out of a ducal coronet or, a demi hern, issuing erm.)

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.