Ollam ("ollav"), named for the ancient title of Ireland's chief poets, celebrates the career of Tomas O Cathasaigh, Henry L. Shattuck Professor of Irish Studies at Harvard University, who is one of the foremost interpreters of the rich and fascinating world of early Irish saga literature. It is a complement to his own book of essays, Coire Sois, the Cauldron of Knowledge: A Companion to Early Irish Saga, also edited by Matthieu Boyd (University of Notre Dame Press, 2014), and a sequel to his classic monograph The Heroic Biography of Cormac mac Airt (Dublin Institute for Advanced Studies,...