King William crossed the Boyne at Drybridge with approximately 3,500 mounted troops-Dutch, English, Danish and Enniskilleners, "most of them being forced to swim".
William his arm painful from the flesh wound he had suffered the previous day, got into difficulty when his horse got bogged down in the mud near the south bank, forcing him to dismount to have it dragged clear. He was asthmatic and noticeably out of breath after his incident.
At the head of the mounted troops, which included the Enniskilleners Cavalry and dragoons, William advanced towards Donore Church. The decisive Oldbridge and, after a sharp clash at Donore, they withdrew towards Duleek.