Coat of arms of Lawford

The blazon

az. three lions, rampant, ar. ducally crowned or. — Crest, a lion, rampant, ppr. ducally crowned or, charged, on the shoulder, with a mullet ar. [Borne by Edward Lawford, Esq. of Bloomsbury-square, London, 1827.]

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.