Called Donnchad[h] IV by Dauvit Broun, "Anglo-French Acculturation", p. 138; called Duncan (IV) Macduff and ninth earl of Fife by Andrew McDonald, "Macduff family, earls of Fife (per. c.1095–1371)", Oxford Dictionary of National Biography, Oxford University Press, 2004 accessed 8 Sept 2007; called Duncan (IV) by Bannerman, "Macduff of Fife", p. 33; in Angus, William, editor, 'Miscellaneous Charters 1315-1401' in Miscellany of The Scottish History Society, volume 5, Edinburgh, 1933: 25, where he is given in a latin charter as Duncanus comes de Fyff, and p.63 where he is given as Duncanus comes de Fyff, and where the modern author calls him tenth Earl of Fife; the number of earls of Fife before Donnchadh IV is not actually known; many older numberings include Ethelred, lay abbot of Dunkeld; this is based on a mistake produced by translation problems from a late 11th century Gaelic charter; see Bannerman, "Macduff of Fife", p. 30, n. 3; there were at least 2, almost certainly more, earls of Fife before either Ethelred or Causantín; see Bannerman, "Macduff of Fife", passim.
wikipedia.org
en.wikipedia.org
Called Donnchad[h] IV by Dauvit Broun, "Anglo-French Acculturation", p. 138; called Duncan (IV) Macduff and ninth earl of Fife by Andrew McDonald, "Macduff family, earls of Fife (per. c.1095–1371)", Oxford Dictionary of National Biography, Oxford University Press, 2004 accessed 8 Sept 2007; called Duncan (IV) by Bannerman, "Macduff of Fife", p. 33; in Angus, William, editor, 'Miscellaneous Charters 1315-1401' in Miscellany of The Scottish History Society, volume 5, Edinburgh, 1933: 25, where he is given in a latin charter as Duncanus comes de Fyff, and p.63 where he is given as Duncanus comes de Fyff, and where the modern author calls him tenth Earl of Fife; the number of earls of Fife before Donnchadh IV is not actually known; many older numberings include Ethelred, lay abbot of Dunkeld; this is based on a mistake produced by translation problems from a late 11th century Gaelic charter; see Bannerman, "Macduff of Fife", p. 30, n. 3; there were at least 2, almost certainly more, earls of Fife before either Ethelred or Causantín; see Bannerman, "Macduff of Fife", passim.
Andy King, Michael A. Penman, England and Scotland in the fourteenth century: new perspectives, page 119. According to the Scalacronica Isabella was arranged to marry Robert Stewart, but married William Felton who had been in charge of her wardship.
