Dr. Croghan was a graduate of Trinity College, Dublin. He arrived in Bloemfontein on 28 February 1867, but left on 6 March 1887, in part because of the relatively harsh winters in the Orange Free State, and became Dean of Grahamstown.
- Mandy Goedhals (2008). "Nuns, Guns and Nursing: An Anglican Sisterhood and Imperial Wars in South Africa 1879 – 1902" (PDF). Studia Historiae Ecclesiasticae. XXXIV (1): 335–357.
- Patrick Comerford (2009). "Anglo Catholicism Relevant after 175 years?" (PDF). Retrieved 2013-09-24.
- Iain MacFarlaine (2008). "Rev Davis George Croghan". Find A Grave. Retrieved 2013-09-24.
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