Earl of Castlehaven is a peerage title in the Peerage of Ireland. It was held in conjuction with the Barony of Audley (created 1312) and the Barony of Audley of Hely (created with the earldom). With the death of the eighth earl, the Earldom of Castlehaven and the Barony of Audley of Hely became extinct. The Barony of Audley created by writ of 1312 is devolved upon his nephew, namely George Thicknesse, 19th Baron Audley.
Cokayne, George Edward, The Complete Peerage of England, Scotland, Ireland, Great Britain and the United Kingdom, Extant, Extinct or Dormant, A. Sutton, Gloucester, 1982. [originally 13 volumes, published by The St. Catherine Press Ltd, London, England from 1910-1959; reprinted in microprint: 13 vol. in 6, Gloucester: A. Sutton, 1982]
Cokayne, George Edward, The Complete Peerage of England, Scotland, Ireland, Great Britain and the United Kingdom, Extant, Extinct or Dormant: Addenda and Corrigenda, Hammond, Peter W., Sutton Publishing, Ltd., Gloucestershire, England, 1998.
Herrup, Cyntha B., A House in Gross Disorder: Sex, Law, and the 2nd Earl of Castlehaven, Oxford University Press, Oxford, 1999.
Baron Vesci of Alnwick in the county of Northumberland 29 December 1269.
Baron Clifford of Appleby in the county of Westmorland 1298.
George, eighth lord Audley, fourth in descent from James, distinguished himself in the wars of the Netherlands, and was wounded at the battle of Kinsale in the kingdom of Ireland 24 December 1601.