Coat of arms of Hull

The blazon

per pale, az. and gu, a chev. or, betw, three fleurs-de-lis ar. — Crest, a cubit arm, grasping a fleur-de-lis Hull, alias Hill, [Olneston, Gloucestershire,] az. on a chev. betw. three owls ar. as many mullets sa. all within a bordure engr. 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.