¹¹ For a useful general survey of the political dynamics of Angevin state formation, see Robert Bartlett, England under the Norman and Angevin Kings, 1075–1225, The New Oxford History of England (Oxford: Oxford Univ. Press, 2000), 1–102. See also John Gillingham, The Angevin Empire, 2nd edn (New York: Oxford Univ. Press, 2001).