Robert III succumbed to grief, the death of one son and the captivity of other. James I was stabbed by Graham in the abbey of the Black Monks of Perth. James II was killed at the siege of Roxburgh, by a splinter from a burst cannon. James III was assassinated by an unknown hand in a mill, where he had taken refuge during the battle of Sauchie. James IV, wounded by two arrows and a blow from a halberd, fell amidst his nobles on the battlefield of Flodden