Ciaran O'Neill is Ussher Associate Professor in History at Trinity College Dublin and Deputy Director of Trinity Long Room Hub. A nineteenth-century historian, his first monograph, Catholics of Consequence (2014) won the J.S. Donnelly Prize at the American Conference for Irish Studies. He is editor (with Finola O'Kane Crimmins) of the book, Ireland, Slavery and the Caribbean (Manchester, 2023).