Bertrand du Guesclin
French army commander and Constable of France from 1370. He attracted attention at the Siege of Rennes (1356–57) and was promoted by the regent, Charles V, to the office of Constable of France. He fought in campaigns against the English, and, from 1366–1369 against Spain where he was defeated and captured at the Battle of Najera in 1367. It was his conduct of the war against the English which helped Charles recover his kingdom.