By a gentleman just arrived from Charlestown, we are informed that one of the large three decked Ships lately carried in there by Capt. Biddle in the Randolph continental Frigate, proves to be a prize taken by Capt. Palmer in the privateer Nancy, belonging to Mr. John W. Stanley of this Town. It seems a few days after Capt. Palmer took her, a large Ship of 20 Guns from Jamaica retook her, in a Day or two after which the Randolph fell in with them both and conducted them safe to Charlestown. The Nancy has also taken a Guinea–Man with 100 Slaves, Ivory, and other Valuables, and sent her in to Georgia.