Alexander Stewart, 4th High Steward of Scotland

Alexander Stewart of Dundonald (c. 1214–1283) succeeded his father as hereditary High Steward of Scotland in 1241. He joined Louis IX of France on the Seventh Crusade, where his brother John was killed at Damietta in 1249. In 1255 he served as a regent during the minority of Alexander III.

In October 1263 he commanded the Scottish army at Largs, repelling the invasion of Haakon IV of Norway. Under him the Stewarts gained the Cowal peninsula and Dunoon Castle. He died in 1283.