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2. Wood, Susan, English Monasteries and Their Patrons in the Thirteenth Century (Oxford, 1955)
3. Treharne, R. F., The Baronial Plan of Reform, 1258–1263 (Manchester, 1932)
4. Stubbs, William, The Constitutional History of England, 2nd edition (3 vols., Oxford, 1874–8)
5. From Morðor to Murdrum: The Preconquest Origin and Norman Revival of the Murder Fine