Cork was then a walled town, but being commanded by high ground can never have been strong. Outside the south gate and bridge and not far from where the Passage railway station now stands Carew had begun to build a fort with the double object of overawing the town and of intercepting a foreign enemy. After the battle of Kinsale the work had been discontinued, and no guns were mounted. The north gate was commanded by Shandon Castle, which was in safe hands. The east and west sides of the city were bounded by the river, which ran among marshy islands. The approach from the open sea was partly protected by a fort on Haulbowline Island, at the point where the Lee begins finally to widen out into the great harbour, and the seditious citizens had visions of destroying this stronghold, which the recorder pronounced useless and hurtful to the corporation. Inside the town and near the north gate was an old tower known as Skiddy's Castle, used as a magazine for ammunition and provisions. The citizens refused to allow stores to be carried out to the soldiers and at the same time obliged them to remain outside. One alleged grievance was that two guns belonging to the corporation were detained at Haulbowline, and Thornton against Boyle's advice exchanged them for two in the town which belonged to the King. Lieutenant Murrough was placed in charge of Skiddy's Castle, every Englishman's house was searched for powder, 'a priest being forward in each of these several searches,' and the inmates expected a general massacre. Sir George Thornton left the town, Lady Carew took refuge in Shandon, and Lord Thomond's company was sent for. Wilmot arrived with his men when the disturbances had lasted for more than a week, but the townsmen would not listen to reason, and began to demolish Carew's unfinished fort. The recorder admitted that he had instigated this act of violence. Wilmot took forcible possession of the work, but forbade firing into the town on pain of death. The inhabitants then broke out into open war, sent round shot through the Bishop's palace where the Commissioners lodged, and killed a clergyman who was walking past. They severely cannonaded Shandon, but, as Lady Carew reported, 'never did any harm to wall or creature in it,' and did not frighten her in the least. On May 5 Thornton brought up a piece of Spanish artillery from Haulbowline, and when three or four shots had pierced houses inside the walls, a truce was made. Five days later Mountjoy arrived.[11] [Sidenote: Violent proceedings of the citizens.]