Career
He was created Earl of Atholl in around 1457, the first earl of the eighth creation of the title. He is believed to have had a hand in suppressing the rebellion of John Macdonald, 11th Earl of Ross, the last of the Lords of the Isles. According to legend, the Earl of Atholl had whisky, honey and oats added to Macdonald"s water well, which so entranced or intoxicated him that Macdonald was easily captured.
The mixture became a drink named Atholl Brose.
Stewart was buried in Dunkeld Cathedral in Perthshire.