Although Yates’s trade card is not signed, it is probably after a design by Matthias Lock (fl 1740-1769), whose ‘A New Drawing Book of Ornaments’, was published by “H. Yates” in 1752. The rococo cartouche is adorned with an engravers burin, and a seal stamp.

Probably Henry Yates (died 1762), and father of Henry Yates (1731?-1814), “map engraver of Coventry, who took on William Thompson as an apprentice 7 Aug 1788, and was buried at St. Michael Coventry 27 Nov 1814 at the age of eighty-three, is perhaps the most likely candidate. He was presumably the son of the London engraver of the same name, who died in 1762 and to whom the younger Henry Yates had been apprenticed (Goldsmiths) 3 Oct 1744. His son Thomas was apprenticed to him in 1783 and later became a partner” (Worms & Bayton-Williams).