Lyons, J.B. ‘Sylvester OHalloran, 1728-1807’, Eighteenth-century Ireland/Iris an dá chultúr, Vol. 4 (1989), pp 65-74.
Sylvester OHalloran was a surgeon, antiquarian and prolific letter writer, whose publications contributed to the medical advancement of Ireland in the eighteenth-century. He was one of the few who managed to turn the prohibition on catholic education in Ireland to his advantage, and went abroad to study surgery. He returned to Ireland and set up practice in Limerick. This article discusses OHallorans life and career as a cultured, well-informed catholic gentleman, his various publications, and his letters to Edmund Burke and Charles OConor of Belangare. OHallorans work was featured in The Medical Review (1775), and Thomas Ó Míocháin wrote a poem in his honour.