The Château de Pierrefort is a ruined mediaeval castle in the commune of Martincourt. It was built in 1306. In 1300, Pierre de Bar, younger son (among 13 siblings) of Theobald II, Count of Bar, received from his older brother Henri III de Bar among other estates, the lands of Martincourt and Mamey.
References:The Château du Lude is one of the many great châteaux of the Loire Valley in France. Le Lude is the most northerly château of the Loire Valley and one of the last important historic castles in France, still inhabited by the same family for the last 260 years. The château is testimony to four centuries of French architecture, as a stronghold transformed into an elegant house during the Renaissance and the 18th century. The monument is located in the valley of Le Loir. Its gardens have evolved throughout the centuries.