Cawley (2006) citing: Malaterra, I.4, p. 9; Romoaldi Annales 1057, MGH SS XIX, p...

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Cawley (2006) citing: Malaterra, I.4, p. 9; Romoaldi Annales 1057, MGH SS XIX, p. 405; Amatus III.43, p. 101.