Coat of arms of Rothwell

The blazon

ar. two chev. sa. each charged with three bezants, on a canton gu. a mural crown of the third. — Crest, out of a mural crown, a stag s head ar. attired or, holding in his mouth a rose ppr. leaved vert. [GranfeJ March, 1687.]

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.