Lors de la guerre de succession, Pierre de Rostrenen commandait une partie de l'armée de Charles de Blois prétendant au titre de duc de Bretagne par son mariage avec Jeanne de Penthievre. A la bataille...
Family Rostrenen , which some historians date to the reign of Louis the Pious , is known from the eleventh to the fifteenth century. It would end the viscounts of Poher . In 834 , William of Rostrenen ...
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