John II, called Jean de L'Aigle (died 1454), was Count of Penthièvre from 1433 until his death.
The duke agreed, but then refused to cooperate, claiming his agreement was made in a state of duress.
He only entered into possession of his Breton lands in 1448 after reconciling with Francis I, Duke of Brittany.
[2] During the final campaigns of the Hundred Years’ War, he served as lieutenant general for Charles VII of France in Aquitaine between 1450 and 1451 and he distinguished himself at the Battle of Castillon in 1453.
[3] John married Margaret de Chauvigny, lady of Saint-Chartier, but died without issue in 1454.