The history of Laval Dieu begins in this place formerly called “la Bouche de Semoy” when the Archbishop of Reims, Hincmar, had a chapel built in 867, that was dedicated to Saint Rémy and entrusted it to the secular canons from the Braux Collegiate Church with a view to evangelising the region. Twelve canons from Prémontré arrived in the month of June 1128, at the beginning of the Semoy Valley which then became for evermore the “Vallis Dei”, the Vallée de Dieu, Laval-Dieu. Right from the moment it was founded Laval Dieu Abbey received as alms or in exchange for prayers, the inherited lands in Monthermé and further beyond in the neighbouring areas situated in the Empire, such as Auton wood in the Roc la Tour direction, owned by the Orchimont family. That is how Monthermé became an entity, a village, a seigneury whose lord of the manor was the Abbot of Laval Dieu. The inside of the church’s walls is entirely covered with oak panelling up to a height of 3.50 m that was installed in the early years of the 18th century.
References:Sigmaringen Castle was first mentioned in the year 1077 in the chronicles of Petershausen monastery. The oldest parts of the castle are concealed beneath the alterations made during the 17th and the 19th centuries. The secret of the earliest settlement built on this defendable rock will never be fully revealed: large-scale excavation work would be necessary, which the extensive land development renders impossible. Judging from the many Roman remains unearthed in the area around Sigmaringen, the 12th century keep known as the 'Roman Tower' could be traced back to a Roman predecessor.
The castle remains that have been preserved (gate, great hall and keep) date back to the Staufer period around 1200. The castle remains were integrated into subsequent buildings. The foundations of the castle buildings are to a large extent identical to the surrounding castle wall.
These remains give us a good idea of how the castle might have looked during the 12th century.