My copy of Ramsey is actually the 12th edition, 1763, but it probably was present in earlier editions, but not the very earliest as it's in Vol 4.

Completely agree, and very likely the London stage, as with much of what Ramsey published. I'm interested in the fol de rol chorus, as Alfred Williams collected a version c1910 quite close to the printed version and it has the fol de rols. How does the stanza with the fol de rols run? Is The Charmer online? The name 'Yair' sounds familiar.