cash. James Hamilton was a nephew of Richard Hamilton but fought on the other side. These provisions were to be crucial during the siege. He also brought the commission from King William and Queen Mary that confirmed Colonel Lundy as the town's Williamite governor. Lundy swore the oath of allegiance to William in the cabin of the Jersey. The town committee decided to build a ravelin in front of the Bishops Gate, possibly using some of the money brought by Captain Hamilton. Siege Tyrconnell and James decided to bring Derry back under their control. On 2 or 3 April Major-General Jean Camus, Marquis de Pusignan, marched north with five regiments of foot. This brought the number of troops in the north to about 12000. James followed on 8 April, accompanied by d'Avaux and Melfort. The passes On 13 April cavalry forming part of the Jacobite vanguard was reported approaching Derry. Lundy called a council of war that decided to defend a line along the River Finn, SW of Derry, near Strabane. Passes over the river at Castlefin, Clady, Long Causeway, and Lifford were manned. On 15 April, this line was attacked by the cavalry vanguards of the two Jacobite armies, Hamilton's, which had come from Coleraine, and Rosen's, which had come from Dublin via Charlemont. Hamilton's cavalry attacked on the Jacobites' left wing at Castlefinn and Clady. At Castlefinn they were repulsed by Colonel Skeffington's Regiment, commanded by John Mitchelburne, but at Clady the cavalry under Richard Hamilton and Berwick swam through the river and routed the defenders. This has been called the Battle of Cladyford. The Long Causeway was not attacked. Rosen's cavalry attacked on the right wing, at Lifford where Jacques de Fontanges, comte de Maumont crossed the river at the head of his cavalry and broke through the defences. Lundy's blunder In the meantime, the English sent reinforcements to Derry. On the very day of the defeat at the Passes, on 15 April, Colonel Cunningham and Colonel Richards arrived on Lough Foyle with the frigate , commanded by Captain Wolfran Cornewall, and nine transport ships carrying two regiments, altogether about 1600 men. Cunningham, who was in charge, had been instructed to take his orders from Lundy, the governor. Lundy, disheartened by his defeat at the Passes, was convinced that the town was lost. On 16 April Lundy held a council of war with Cunningham and Richards from