Coat of arms of Ollington

The blazon

or, a lion, rampant, within a bordure, engr. az. — Crest, out of a ducal coronet or, a buck s head ppr. attired of the first, pierced through the neck with an arrow of the same, headed and feathered 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.