Coat of arms of Sitwell

The blazon

barry of eight, or and ar. three lions, rampant, sa. — Crest, a demi lion, rampant, and erased, sa. in his paw an escocheon, per pale, or and ar.

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.