Coat of arms of Steers

The blazon

az. on a fesse ar. betw. a thistle, in chief, or, and a trefoil, in base, of the second, a cinquefoil gu. — Crest, on a chapeau a wivern, sans legs, wings expanded, ppr.

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.