According to Wikipedia, the day before the battle of the Boyne, William had a narrow escape when he was wounded in the shoulder by Jacobite artillery while surveying the fords over which his troops would cross the Boyne. What if he hadn't been so lucky and had been killed? I assume that even if the Battle of the Boyne still occurs and the Jacobites still lose, James could be persuaded to stay and fight with his rival dead. So how would that change toe course of history? Would the Jacobites win Irish independence? Would James be able to retake England and Scotland? Or would the Jacobites still lose and flee back to France? Even if the still flee, what would happen with the War of the Grand Alliance? Who would succeed William in the Netherlands?