John was handed over to the English in 1412, according to the terms of the Treaty of Buzançais, and not released until 1444. In 1415 he was joined by his older brother Charles, with whom he shared an interest in literature.
The transfer of John to English control in 1412, according to the Treaty of Buzançais, didn't occur until 1444. Two years later, in 1415, his older brother Charles joined him, sharing a common enthusiasm for literature and intellectual pursuits.