Bertrand du Guesclin
Bertrand du Guesclin (c. 1320–1380) was a Breton knight, nicknamed the Eagle of Brittany. He defended Rennes against the English in 1356–1357 and was captured at Auray in 1364.
In 1366 he led free companies to Castile for Henry of Trastámara. Defeated and captured at Nájera in 1367, he was ransomed and helped him seize the throne at Montiel in 1369.
Appointed constable of France by Charles V in 1370, he avoided pitched battles while reconquering Poitou and Saintonge. He died at Châteauneuf-de-Randon in 1380 and was buried at Saint-Denis.