Do you have a name for CLB, the late 18thC owner of this bookplate?

On the reverse of a page of text there is printed these copper-engraved arms of Jenkinson. The problem is to discover in what book these arms appear.

The name once in place at the foot of this bookpile bookplate has been largely scratched out, with loss of paper. Somewhere, surely, there must be another print extant with the name intact.

Identification of ownership is sought