Beaussault Castle, locally known as Château de Beaussault, lies in the village of the same name, in the Seine-Maritime department in France.
I could find almost nothing about the history of Beaussault Castle. In the 11th century a Lordship of Beaussault is mentioned for the first time. The present remains of the castle are said to date back to the 13th century. In 1350 it was owned by a branch of the Montmorancy family.
At present Beaussault Castle consists of a more or less round enclosure with a dry moat on one side and some marshes fed by a little stream on another side. There is a small motte outside of this enclosure on which stands a ruin of a tower, probably the keep. Everything is very much overgrown.
That is all, if you know more, please mail me.
At present Beaussault is a private residence and can not be visited. Too bad, it's a nice castle ruin in a sleepy village.