(en) Joseph Haydn, The Book of Dignities: Containing Rolls of the Official Personages of the British Empire ... from the Earliest Periods to the Present Time ... Together with the Sovereigns of Europe, from the Foundation of Their Respective States; the Peerage of England and Great Britain ..., Longmans, Brown, Green, and Longmans, (lire en ligne), p. 538
(en) A. P. W. Malcomson, The Pursuit of the Heiress: Aristocratic Marriage in Ireland 1740-1840, Ulster Historical Foundation, (ISBN978-1-903688-65-6, lire en ligne), p. 269
(en) 8 papers relating to claims to the baronies of Botreaux, Hungerford, De Molyns and Hastings, (lire en ligne), p. 105