References for Thomas Dubh 10th Earl, 3rd Earl Butler * of Ormonde * of Ossory

---

Sir B.Burke: The Dormant and Extinct Peerage. London, 1866
Sir B.Burke: A Genealogical History of the Peerages and Knightages of the British Empire. London, 1953
A.M.Stokvis: Manuel d'histoire. Amsterdam, 1966