After the battle of Glasgow , in April 1543 Robert crossed the Clyde from Dumbarton Castle .
After the battle of Glasgow , in April 1543 Robert rode to England , where he was regarded as a ' pledge ' or hostage for Matthew .
After the battle of Glasgow , in April 1543 Robert crossed the Clyde from Dumbarton Castle and rode to England , where he was regarded as a ' pledge ' or hostage for Matthew .