Nicholas married Mary, daughter of Reginald le Chen (died 1345) and in doing so brought the estate of Duffus back to the family of de Moravia, from whom Nicholas was a lineal descendant, and at that time the Earls of Sutherland had not yet given up the surname de Moravia.
[3] William de Moravia, 5th Earl of Sutherland confirmed to Nicholas Sutherland, his brother, a charter for the barony of Torboll dated 13 September 1360 and this was subsequently also confirmed by charter from David II of Scotland to Nicholas dated 17 October 1362.
[4] Nicholas Sutherland of Duffus is recorded as having murdered Iye Mackay, 4th of Strathnaver and his son Donald Mackay, 5th of Strathnaver, chiefs of Clan Mackay, while they slept at Dingwall Castle, after they had met there to settle a dispute with the Sutherlands peacefully in 1370.
[5] Nicolas Sutherland was named as Lord of the Castle of Duffus in 1408.
[4][6] Nicholas Sutherland married Mary, daughter of Reginald le Chen (died 1345).