The American privateer Chasseur captured her in 1814 but released her as a cartel to deliver a challenging message to the British government.

[2] Lloyd's List reported on 6 September on a number of prizes that had fallen prey to the American privateers Chasseur, David Porter, and Whig.

[3] On 27 August 1814, Captain Thomas Boyle, of Chasseur, captured Marquis Cornwallis, and by her sent a message to King George.

Boyle issued a proclamation of blockade, forbidding “ships and vessels of all and every nation in amity and peace with the United States from entering... any of [their] said ports.

[4] In September 1818 Marquis Cornwall, Napier, master, was on her way from Dunkirk to Petersburg when she ran aground on the Swine Bottoms in the Baltic Sea, off Denmark.