Francis Herbert returned very speedily from the King, bringing letters in which Henry promised immediate succour. Despairing of success, Field anticipated the action of Rosen at Londonderry, and threatened to expose the citizens' children on the trenches, so as to prevent the garrison from using their guns. Indignant at this breach of faith, and encouraged by the near prospect of relief, the citizens shut their gates and seized most of those who were besieging the castle. A few escaped across the river, and brought the news to Offaly, who returned to Dublin only to find it bent upon the most desperate resistance. Having summoned the city in vain, he cut the leaden pipes which supplied it with water; but there must have been wells also, for no effects followed. He then besieged the castle from Ship Street, where there was cover for his men, but White had some fireworks, which enabled him to burn down the thatched houses of the suburb and give his guns full play. Herbert distinguished himself by shooting twenty-four of the enemy, including one of their chief leaders. Being thus driven from the castle, Offaly attempted the city wall from Thomas Street, demolishing the party walls of the houses so as to make two covered galleries leading up to the New Gate. One of his shots pierced the gate and killed a man who was trying to get water at a pipe in the middle of the Corn Market. A remarkable feat is recorded of Staunton, the gaoler or warder of New Gate. Having galled the rebels by his sharp-shooting, he had become a particular mark for their fire, and he saw a musketeer trying to cover him. He not only shot him in the forehead, but, notwithstanding the hail of bullets issued from the gate, stripped the dead man, and brought his gun and clothes into the town. The Geraldines then tried to burn the gate; but a sally of the besieged through the smoke and flame made them suppose that the city had been relieved, and they withdrew precipitately, leaving a piece of artillery and 100 dead behind them. Offaly lingered for the night in the precincts of the Grey Friary, from which Francis Street takes its name, and next day rejoined his men, who had believed him dead. He made no attempt to renew the siege.[134] [Sidenote: The citizens refuse to help the rebels.]