In 1688 at the Glorious Revolution he sided with William. In spring 1689 when war menaced in northern Ireland, he was sent to Derry with provisions in order to prepare the city for a likely siege. On 21 March 1689 he arrived at Derry from England with two ships: the frigate and the merchantman "Deliverance", bringing gunpowder, munition, weapons, and £595 in cash. These provisions were to be crucial during the Siege of Derry. He also brought the commission from King William and Queen Mary that confirmed Colonel Robert Lundy as Williamite governor of the town.