B. c.1381, eldest s. of Robert, duke of Albany, and Muriella Keith; m. Elizabeth, da. of Archibald, earl of Douglas, 1413; issue: Margaret; d. Verneuil, 17 Aug. 1424.
Created earl of Buchan by his father, by then acting as governor, John Stewart was also granted the earldom of Ross (1406), and appointed chamberlain in place of his father the following year. In 1418, the dauphin requested Scottish aid, and an expeditionary force led by Buchan and his brother-in-law disembarked at La Rochelle in October 1419. A small engagement at Baugé in Anjou (22 March 1421), where the Franco-Scottish forces prevailed, proved that the English were not invincible, and Buchan was made constable of France. The dauphin became recognized as Charles VII, but after his setback at Cravant, Buchan recruited a fresh expeditionary force that landed in France in the spring of 1424. Their combined forces were cut to pieces at Verneuil (17 August) by the English under the duke of Bedford, and Buchan was slain. His death enabled James I, at last back in Scotland, to commence reprisals against the Albany clan.
Subjects: British History.