A native of Omagh, County Tyrone, Ireland, he became the chaplain to an infantry regiment stationed in the West Indies, and whilst there, he married Mary, widow of John Harmon of Antigua. After retiring from the army, he became the Rector (or Chaplain) of St Anne's Church in Liverpool.
He was nominated Bishop of Sodor and Man by Charlotte Murray, Duchess of Atholl on 1 March 1784 and received royal assent on 27 March 1784. He was consecrated on 4 April 1784 and enthroned on 5 May 1784.
- Fryde, E. B.; Greenway, D. E.; Porter, S.; Roy, I., eds. (1986). Handbook of British Chronology (3rd, reprinted 2003 ed.). Cambridge: Cambridge University Press. p. 274. ISBN 0-521-56350-X.
- "Claudius Crigan — Bishop 1784-1813". A Manx Note Book: People. Isle of Man.com. Retrieved 6 June 2012.
- Horn, J. M.; Smith, D. M.; Mussett, P. (2004). "Bishops of Sodor and Man". Fasti Ecclesiae Anglicanae 1541–1857: Volume 11: Carlisle, Chester, Durham, Manchester, Ripon, and Sodor and Man Dioceses. British History Online. pp. 141–146.
|Church of England titles|
|Bishop of Sodor and Man