Military fort in seigniory granted to Charles le Moyne 1657 at Longueil. It was built 1689-90 for protection against Iroquois to the south. Was demolished 1810. The seigniory of Longueil comprised 150 square miles. Charles Le Moyne (son of the first Seigneur) became Baron in 1700 and the title hereditary. The seigniory was noted for its famous baronial chateau of solid masonry and flanked by four towers, reminder of castles in feudal France.