Duffus Castle, near Elgin, was a motte-and-bailey castle and was in use from c.1140 to 1705. During its occupation it underwent many alterations.
Freskin (died before 1171) was a Flemish nobleman who settled in Scotland during the reign of King David I, becoming the progenitor of the Murray and Sutherland families, and possibly others. He built the great earthwork and timber motte-and-bailey castle in c. 1140 on boggy ground in the Laich of Moray. It was certainly in existence by the time the king came to visit in 1151. The motte was a man-made mound with steeply sloping sides and a wide and deep ditch that surrounded the base. Timber buildings would have stood on its flat top and would have been further protected by a wooden palisade placed around the edge of the summit. The bailey contained the buildings necessary to sustain its inhabitants – brew and bake houses, workshops and stables – as well as the living accommodation.
Freskin’s direct line ended in 1270 and the castle passed into the ownership of Sir Reginald le Chen (d.1312) through marriage to the heiress Mary, daughter of Freskin de Moravia. The castle was destroyed in 1297 during a rebellion against English rule in the region. With the death of Reginald le Chen of Duffus in 1345, Duffus passed to his daughter Mariot who was married to Nicholas, the second son of the 4th Earl of Sutherland. The Sutherlands themselves were descended from Freskyn and remained in their possession until 1705 when the castle was abandoned.
References:Kristiansten Fortress was built to protect the city against attack from the east. Construction was finished in 1685. General Johan Caspar von Cicignon, who was chief inspector of kuks fortifications, was responsible for the new town plan of Trondheim after the great fire of 18 April 1681. He also made the plans for the construction of Kristiansten Fortress.
The fortress was built during the period from 1682 to 1684 and strengthened to a complete defence fortification in 1691 by building an advanced post Kristiandsands bastion in the east and in 1695 with the now vanished Møllenberg skanse by the river Nidelven. These fortifications were encircled by a continuous palisade and thereby connected to the fortified city. In 1750 the fortress was modernized with new bastions and casemates to protect against mortar artillery.