Surname: MacDuff | Name index 7 people Constantine MacDuff, 3rd Earl of Fife Defagon MacDuff, 2nd Earl of Fife Duncan MacDuff, 1st Earl of Fife Duncan MacDuff, 10th earl of Fife * 1285 Dundan MacDuff, 5th Earl of Fife Isabel MacDuff Isabel MacDuff, countess of Fife * 1332 Surname