sentences:  It was reinforced in the 14th century by Guillaume de Sam, who built the keep, a second chapel and the eastern buildings.The castle became the property of the d'Estaing family when the sole heir, Jehanne de Murol, married Gaspard d'Estaing in the 15th century.The castle was richly decorated and, under François I d'Estaing, in the 16th century it was surrounded by a huge curtain wall with towers.