Robert Munro, 6th Baron of Foulis well have had Munros with him when he was captured at the Battle of Dunbar (1296). It was the Earl's son "Sir Walter the Ros" who fought at the Battle of Bannockburn in 1314 where the Scottish army defeated the English and Robert Munro is said to have fought there with him. General Stewart later included the Munros in the list of Highland clans who fought at Bannockburn. Robert Munro is said to have survived the battle but according to tradition his son George was killed and Robert was therefore later succeeded by his grandson, also called George. Robert's second
Robert the Bruce eventually lifted Bruce's excommunication. In May 1328 King Edward III of England signed the Treaty of Edinburgh-Northampton, which recognised Scotland as an independent kingdom, and Bruce as its king. In 1325 Robert I exchanged lands at Cardross for those of Old Montrose in Angus with Sir David Graham. It was to be here that Robert would build the manor house that would serve as his favoured residence during the final years of his reign. The extant chamberlain's accounts for 1328 detail a manor house at Cardross with king's and queen's chambers and glazed windows, a chapel, kitchens, bake- and brew-houses,