The Castle of Trévoux is an old castle , from the end of xiii th century or the beginning of the xiv th century, rebuilt several times and restored 3 , whose remains stand in the town of Trévoux in the department of Ain , region Auvergne-Rhône-Alpes . The castle was the center of the Lordship of Trévoux and the county seat of a lordship of the principality of Dombes No