Shortly after his death, William fitz Duncan's illegitimate son, Wimund, bishop of the Isles, attempted to gain his father's lands in Moray in a rebellion against David. He was bought off with lands in Cumbria rather than defeated outright, and was later captured, castrated and blinded by Cumbrians unhappy with his rule. Wimund, although now accepted to be a son of William fitz Duncan, is not counted among the Meic Uilleim.Oram, pp. 182–186; MacDonald, pp. 100–102. Compare Barrow, p. 51. Duncan, p. 67, offers no conclusions.
