William Sharman Crawford (English Wikipedia)

Duffy, Charles Gavan (1898). My life in two hemispheres, Volume 1. London: Fischer Unwin. p. 99. Archived from the original on 23 September 2021. Retrieved 1 September 2020.
Mulvey, Helen (2003). Thomas Davis and Ireland: A Biographical Study. Washington DC: The Catholic University of America Press. p. 180. ISBN 0813213037. Archived from the original on 24 June 2021. Retrieved 3 September 2020.
Hoppen, K. Theodore; Hoppen, Karl T. (1984). Elections, Politics, and Society in Ireland, 1832-1885. Clarendon Press. p. 267. ISBN 978-0-19-822630-7.
McCaffrey, Lawrence (1976). The Irish Catholic Diaspora in America. Washington DC: The Catholic University of America Press. p. 145. ISBN 9780813208961.

britishmuseum.org

Nelson, Julie Louise (2005). 'Violently Democratic and Anti-Conservative'? An Analysis of Presbyterian 'Radicalism' in Ulster, c 1800-1852 (PDF). Department of History, Durham University (doctoral dissertation). pp. 171, 140–141, 179.

"Irish Tithe Act Of 1838". encyclopedia.com. Archived from the original on 22 September 2021. Retrieved 15 September 2020.

Lyons, Dr Jane (1 March 2013). "Sir Charles Gavan Duffy, My Life in Two Hemispheres, Vol. II". From-Ireland.net. Retrieved 27 March 2021.

Farrell, Stephen (2009). "Belfast | History of Parliament Online". www.histparl.ac.uk. Retrieved 25 November 2021.

Webb, Alfred (1878). "William Sharman-Crawford - Irish Biography". www.libraryireland.com. Retrieved 20 November 2021.

West, Julius (1920). A History of Chartism, III. London: Constable and Company. pp. 194–196.

Barker, G. F. R. (2004) "Shee, Sir William (1804–1868)", rev. Hugh Mooney, Oxford Dictionary of National Biography, Oxford University Press.

Shields, Andrew (2009). "John Napier and the Irish Land Bills of 1852". The Australasian Journal of Irish Studies. 9: 31–51.

"Irish Tithe Act Of 1838". encyclopedia.com. Archived from the original on 22 September 2021. Retrieved 15 September 2020.
Object, Object. "Davis to R.R. Madden, March 1843 (Gaven Duffy Papers) quoted in Terence LaRocca (1974) "The Irish Career of Charles Gavan Duffy 1840-1855", Doctoral Dissertation, Loyola University Chicago, pp. 17-18. Loyola eCommons" (PDF). Archived from the original on 23 September 2021. Retrieved 3 September 2020.
Duffy, Charles Gavan (1898). My life in two hemispheres, Volume 1. London: Fischer Unwin. p. 99. Archived from the original on 23 September 2021. Retrieved 1 September 2020.
Mulvey, Helen (2003). Thomas Davis and Ireland: A Biographical Study. Washington DC: The Catholic University of America Press. p. 180. ISBN 0813213037. Archived from the original on 24 June 2021. Retrieved 3 September 2020.