and Community, Essays Presented to G.W.S. Barrow, (Edinburgh, 1993), pp. 20–38 Barrow, G. W. S., Robert Bruce and the Community of the Realm of Scotland, (Edinburgh, 1988) Barrow, G.W.S. Earl's of Fife in the 12th Century, (Proceedings of the Society of Antiquaries of Scotland, 1952–53), pp. 51–61. Lawrie, Sir Archibald C., Early Scottish Charters Prior to A.D. 1153, (Glasgow, 1905), no. XXXVI, pp. 28–31, pp. 283–84 Roberts, John L., Lost Kingdoms: Celtic Scotland and the Middle Ages, (Edinburgh, 1997) External links Stirnet: "Fife1" University of Glasgow: Genealogical chart of mormaír (earls) of Fife, showing use of Gaelic names (via Internet Archive Wayback Machine) Clan MacDuff Forfeited earldoms in the Peerage of Scotland Extinct earldoms in the Peerage of the United Kingdom Noble titles created in 1107 Noble titles created in 1120 Noble titles created in 1129 Noble titles created in 1885 Noble titles created for UK MPs