During the English war with France 1756-63, French prisoners were kept in the castle. In 1760 Francios Thurot made a daring early morning raid on the town and castle, he landed a few hundred men at Kilroot, they took the town and castle after a short standoff, he then released all the French prisoners and set fire to a part of the town before setting sail. The Royal Navy later intercepted the French ships off the Isle of Man which they sank and in the process, Thurot was killed. During the 1798 rebellion of the United Irishmen, many local men joined up including Presbyterian ministers. It was here that William Orr was tried and hanged for giving the oath of the United Irishmen to an enlisting soldier, the case was highly controversial and widely regarded as judicial murder. Henry Joy McCracken was arrested close to Carrickfergus on his way to Greenisland to board a boat for Scotland, he was taken Belfast, where he was tried and hanged at the Cornmarket.