Gomer Williams book History of the Liverpool Privateers and Letters of Marque, with an Account of the Slave Trade mentions a Liverpool privateer called the Quaker.

"The paper of October 4th, 1781, stated that the Quaker, Captan Evans, had arrived at Newfoundland from Liverpool, with a rebel privateer of 13 guns, which he had captured. Early in 1782 the Quaker took three prizes, and carried them into Antigua, where they sold for £21,000. On his passage to Newfoundland, in the autumn of the same year, this very pugnacious Quaker fell in with a French 44-gun ship, exchanged a broadside with her, and got clear by dint of sailing, after an exciting chase of twelve hours. The Quaker had one boy killed, and another wounded, but received no other damage. In the paper of February 6th, 1783, we read that the Quaker had captured in the West Indies, a brig with a Letter of Marque, from Martinique to France. laden with sugar, coffee, and cocoa, valued at £10,000, and sent her to Tortola."

A later mention of the Quaker comes from 1797 when it was recaptured with 388 slaves on board from a French squadron under Renaud off the Goree.

Gomer Williams book is in Google books; it is a very interesting account of Liverpool shipping, and of the slave trade, but he rarely gives any sources for his information so it is very hard to verify most of his history.

Matthew