Scene from the life of Bertrand du Guesclin, (19th century). Bertrand as a child, fighting with others. Bertrand du Guesclin (c1320-1380) entered the service of Charles of Blois, Duke of Brittany, fighting against the invading English. He was knighted in 1354 and later served King Charles V of France who made him Lieutenant of Normandy and Count of Longueville. At the Battle of Auray (1364), du Guesclin was ransomed after being taken prisoner by the English, and led mercenaries into Spain where he fought for Henry of Trastamara against his half-brother, Peter the Cruel of Castile. Du Guesclin won the throne of Castile and Leon for Henry, who became King Henry II. In 1370, Du Guesclin was made Constable of France by Charles V, and worked to drive the English out of France until his death. Colour lithograph produced by the Monastery of Aiguebelle, from a private collection and the artist is unknown.