During the Jacobite Rising of 1715, Lancelot Errington, one of a number of locals who supported the Jacobite cause, visited the castle. Some sources say that he asked the Master Gunner, who also served as the unit's barber, for a shave. Once Errington was inside, it became clear that most of the garrison were away; later that day he returned with his nephew Mark Errington, claiming that he had lost the key to his watch. They were allowed in, overpowered the three soldiers present, and claimed the castle as a landing site for the Jacobite group led by Thomas Forster, Member of Parliament for the county of Northumberland. Reinforcements did not arrive to support the Erringtons, so when a detachment of 100 men arrived from Berwick to retake the castle they were only able to hold out for one day. Fleeing, they were captured at the tollbooth at Berwick and imprisoned, but were later able to tunnel out of their gaol and escape.