Coat of arms of Jenkes

The blazon

or, three boars heads, couped sa. a chief, indented, of the last. — Crest, a dexter arm, embowed, habited sa. cuffed ar. enfiled with a ducal coronet or, grasping in the hand ppr. a sword of the second, hilt and pomel of the third. [Granted May 2, 1582.]

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.