The dataset comprises a tabular listing of student and staff of University College Dublin who participated in, and died in, World War I. The data was derived by Conor Mulvagh fom two sources: The National University of Ireland War List, "Roll of Honour," and the Commonwealth War Graves Commissions database of war dead.

A collection of papers belonging to Fr. Francis A. Gleeson relating to his time as Catholic Military Chaplain to the 2nd Battalion Royal Munster Fusiliers during World War I. The papers include diaries detailing life at the front and religious activities, Brigade Rolls listing mainly Roman Catholic soldiers, and correspondence from the families of men missing or killed in action.