Clan Mackenzie in the 13th and 14th centuries, terminated in the heiress Margaret del Ard, the Lady of Erchless, who married Alexander Chisolm of Cromer c.1350. In the 14th century during the Wars of Scottish Independence the Clan Mackenzie is said to have been among the clans who fought on the side of Robert the Bruce at the Battle of Inverurie (1308) against the forces of the Clan Comyn who were rivals to the throne. Chief Iain Mac Coinnich is said to have led a force of five hundred Mackenzies at the Battle of Bannockburn in 1314 where the English were defeated.
Scotland in the Late Middle Ages murder of Comyn, at Greyfriars Kirk in Dumfries. Less than seven weeks later, on 25 March Bruce was crowned as king Robert I at Scone. However, Edward's forces overran the country after defeating Bruce's small army at the Battle of Methven. Despite the excommunication of Bruce and his followers by Pope Clement V, his support grew; and by 1314, with the help of leading nobles such as Sir James Douglas and the Earl of Moray, only the castles at Bothwell and Stirling remained under English control. Edward I had died in 1307 and his heir Edward II moved an army