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Origin and history

The Château de Trévaly, located in the commune of La Turballe in Loire-Atlantique, is a manor house built on the edge of the salt marshes, at the foot of the slopes of Trescalan. His name comes from Breton trève, designating a parish subdivision, and villa Alli, reflecting his territorial and linguistic anchoring Breton. This site, originally a medieval seigneury, illustrates the local feudal organization with low and medium court rights attached to the Barony of Campzillon.

In the 13th century, the Trévaly estate already included a wood, a dovecote, a pond, a chapel, a windmill and a vineyard named Clos de Trévaly. In 1487, Jean de Muzillac, seigneur of the place, lost his property after a trial for treason against Francis II of Brittany, linked to the Treaty of Montargis. The mansion, confiscated from the French Revolution, is sold as a national property to two inhabitants of the Croisic. In the 17th century, it underwent major architectural changes.

In 1922, the castle was bought by the owner of the Bréhet castle, who undertook major restoration work. Among the notable modifications, the arcade gate of the west facade, taken in 1926 from the Kersalio mansion in Guérande, is integrated into the building. These additions reflect heritage preservation and reuse practices in the early 20th century, while marking the stylistic evolution of the mansion over the centuries.

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