Royal Navy a major naval power in the North Sea. The development of naval power allowed Robert to successfully defeat English attempts to capture him in the Highlands and Islands and to blockade major English controlled fortresses at Perth and Stirling, the last forcing King Edward II to attempt the relief that resulted at English defeat at Bannockburn in 1314. Scottish naval forces allowed invasions of the Isle of Man in 1313 and 1317 and Ireland in 1315. They were also crucial in the blockade of Berwick, which led to its fall in 1318. With the Viking era at an end, and
Robert the Bruce and his party then attacked Dumfries Castle where the English garrison surrendered. Bruce hurried from Dumfries to Glasgow, where his friend and supporter Bishop Robert Wishart granted him absolution and subsequently adjured the clergy throughout the land to rally to Bruce. Nonetheless, Bruce was excommunicated for this crime. English records still in existence today tell a completely different story. They state that the Comyn murder was planned in an attempt to gain the throne of Scotland. For this reason King Edward of England wrote to the Pope and asked for his excommunication of Robert Bruce. No records have ever been