12 See Amy Kelly, Eleanor of Aquitaine and the Four Kings (1950; rpt. Cambridge: Harvard Univ. Press, 1978), 75–81; Gillingham, Angevin Empire, 18–21.
13 See Gillingham’s discussion of the nomenclature problem (ibid. 2–5).
14 Ibid. 3–4.
15 John Gillingham, Richard I, Yale English Monarchs (1999; rpt. New Haven: Yale Univ. Press, 2002), 24–40.