Coat of arms of Wrench

The blazon

gu. three cross crosslets, in bend, or. [Granted 1588. Borne hy Thomas Wrench, of Kingston-upon-Thames, Surrey, and his Son, Jacob Wrench, of Camberwell, in the same County, and of the City of London, lineal descendants of Thomas Wrench, of Oxford, formerly proprietor of the site of Worcester-College, OxfordJ]

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.