He was a significant military figure of the time, participated in the defense of Marseilles in 1536, and died of his wounds at the Battle of Ceresole.

[2] After the death of Antoine's widow in 1560, the castle was successively held by several noble families as lords of Saint-Amand.

In 1659 the lordship (including the castle) was purchased by Cardinal Mazarin, together with the much larger Duchy of Nevers.

Noble Léonard Guyot de Montchougny then acquired it in 1710, and the castle remained in the property of his descendants until 1896.

[3] The Musée du Grès inside the castle displays local production of stoneware (grès in French), for which Saint-Amand and the surrounding region of Puisaye are renowned, including works of Jean-Joseph Carriès who had a workshop in the town.