Check out The Dictionary of Irish Biography Online

The Dictionary of Irish Biography is a collaborative project between Cambridge University Press and the Royal Irish Academy, available in print and online, involving 700 contributors and spanning 9,000 lives. The Dictionary is the indispensable reference work for Ireland. It includes the lives of Irish men and women who made a significant contribution in Ireland and abroad, as well as those born overseas who had noteworthy careers in Ireland from James Ussher to James Joyce, St Patrick to Patrick Pearse, St Brigit to Maud Gonne MacBride, Shane O'Neil to Eamon de Valera, Edward Carson to Bobby Sands.

Go to: http://0-dib.cambridge.org.library.gmit.ie/ to check out this online dictionary.