^Leigh Rayment's historical List of Members of the Irish House of Commons. Cites: Johnston-Liik, Edith Mary (2002). The History of the Irish Parliament 1692-1800 (6 volumes). Ulster Historical Foundation.
^Farrell, Stephen (2009). D.R. Fisher (ed.). "ALEXANDER, Josias Du Pré (1771-1839), of Freemantle Park, Hants and 7 Grosvenor Square, Mdx". The History of Parliament: the House of Commons 1820-1832. Cambridge University Press. Retrieved 11 June 2014.