The Hunaudaye’s castle was built by Olivier Tournemine around 1220. In that time, this castle protected the eastern border of the Penthièvre (Lamballe’s area), which was involved in a feud with the Poudouvre (Dinan’s area).
The castle was destroyed in 1341, during the war of Brittany Succession, a civil war that ravaged the Brittany dukedom during two decades. At the end of the 14th century, Pierre Tournemine started the reconstruction of the castle according to the latest military innovations, the three bigger towers and the dwellings were built in that period.
At the end of the 15th century, the Tournemine family became powerful within Brittany dukedom. In 1487, they were granted the title of « Baron de la Hunaudaye ». By the 16th century, their seigneury represented more than 80 parishes. In addition, they owned various other lands, seigneuries and castles in the Tregor area and also others in the vicinity of Nantes.