English Church: II. Part 1 (1205–1265), Part II (1265–1313); edited by F.M. Powicke and C.R. Cheny (Oxford, 1964) Brewer, Holly. By Birth or Consent: Children
Series I (3 vols) (John Murray, London 1845), I, pp. 264-68 (Google). F.M. Powicke and E. B. Fryde, Handbook of British Chronology, 2nd. ed. (Royal Historical
Battle of Evesham in August, 1265. Powicke pp. 257-258 Johns Johns Johns F.M. Powicke, "Loretta, Countess of Leicester", Historical Essays in Honour of James
Life of Aelred of Rievaulx and the Letter to Maurice. Translated by F. M. Powicke and Jane Patricia Freeland, Introduction by Marsha Dutton, Cistercian
of universities, Ithaca: Cornell University Press, 1923, 1957, p. v. F. M. Powicke, "Charles Homer Haskins", The English Historical Review, vol. 52, no
Dictionary of National Biography. Vol. 41. London: Smith, Elder & Co. F. M. Powicke and P. Millican, revised by Janice Gordon-Kelter and Ellen Jacobs, "Norgate
negotiations preceding the Treaty of Leake", Studies... presented to F.M. Powicke (1948:333-53); both noted in McKisack 1959:54 note 1. McKisack 1959:53
include her two stepchildren, John and Joan. This identity is accepted by F. M. Powicke, "Bibliographical Note on Recent Work upon Stephen Langton" in English
medievale, 14, pp. 186-210. Studies in Medieval History presented to F.M. Powicke, ed. by R.W. Hunt, W.A. Pantin and R.W. Southern, Oxford, pp. 180-208
Other Documents Relating to the English Church, vol. 2: 1205–1313, ed. F. M. Powicke and C. R. Cheney (Oxford: Clarendon Press, 1964), part 2, p. 900–905
Birth of Britain, A History of the English-Speaking Peoples, vol. 1 F. M. Powicke and P. Millican (2004). "Norgate, Kate (1853–1935)". Oxford Dictionary