The siege went on but slowly. Vigorous sorties were made, and the cavalry sometimes sallied out from the gates and made excursions as far as Wouw, a village three miles away, and took many prisoners. Among these were two commissaries of ordnance, who were intrusted to the safe keeping of the Deputy-Provost Redhead. They were not strictly kept, and were allowed to converse with the provost's friends. One of these, William Grimeston, suspected that one of the commissaries, who pretended to be an Italian, was really an English deserter who had gone over with the traitor Stanley; and in order to see if his suspicions were correct, pretended that he was dissatisfied with his position and would far rather be fighting on the other side. The man at once fell into the trap, acknowledged that he was an Englishman, and said that if Grimeston and Redhead would but follow his advice they would soon become rich men, for that if they could arrange to give up one of the forts to Parma they would be magnificently rewarded.