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.

Earls of Castlehaven (1616)

• George Tuchet, 1st Earl of Castlehaven (1551-1617)
• Mervyn Tuchet, 2nd Earl of Castlehaven (1593-1631)
• James Tuchet, 3rd Earl of Castlehaven (c. 1617-1684)
• Mervyn Tuchet, 4th Earl of Castlehaven (d. 1686)
• James Tuchet, 5th Earl of Castlehaven (d. 1700)
• James Tuchet, 6th Earl of Castlehaven (d. 1740)
• James Tuchet, 7th Earl of Castlehaven (1723-1769)
• John Tuchet, 8th Earl of Castlehaven (1724-1777)

References

• 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.