David McCullagh will deliver the address at the Costello commemoration on 19 June 2016. David is a journalist with RTÉ, presenter of Prime Time, and author of The Reluctant Taoiseach: a Biography of John A. Costello (Gill & Macmillan, 2011).
He recently recorded a series of podcasts about John A. Costello for HistoryHub.ie. You can access them here.