References for Thomas 4th Earl, 2nd Earl Wriothesley * of Southampton * of Chichester

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Sir B.Burke: A Genealogical History of the Peerages and Knightages of the British Empire. London, 1953
M.A.H., Marquis de Ruvigny: The Plantagenet roll of the blood royal, Essex Volume. London, Edinburgh, 1908
F.M.Powicke, E.B.Fryde: Handbook of British Chronology. London, 1961