Treaty of Guérande (1365)
Encyclopedia
The first treaty of Guérande, signed April 12, 1365 ended the Breton War of Succession
and defined the law of succession of the duchy.
Breton War of Succession
The Breton War of Succession was a conflict between the Houses of Blois and Montfort for control of the Duchy of Brittany. It was fought between 1341 and 1364. It formed an integral part of the early Hundred Years War due to the involvement of the French and English governments in the conflict; the...
and defined the law of succession of the duchy.