Cathy runs the Irish Studies teaching programme in Mary Immaculate College, University of Limerick. She has an MPhil in Archaeology from the University of Durham and a second MPhil in Old-Irish Language and Culture from Trinity College Dublin. Her DPhil at Oxford examined the history of the cult of St Patrick. She has taught in many universities, served ten years as organising Secretary of the Irish Conference of Mediaevalists, and runs summer schools in Old Irish in Limerick when she is not off gallivanting across Europe with her pilgrim staff, knapsack and tent.