James Joseph McCarthy was an Irish architect known for his design of ecclesiastical buildings.
[1] He was educated by the Christian Brothers in Richmond St., and went on to study architecture at the Royal Dublin Society School.
He was also appointed Professor of Architecture at the Catholic University of Ireland and at the Royal Hibernian Academy.
He was also a close friend of Charles Gavan Duffy and was a member of the Young Irelanders.
J.J McCarthy completed over fifty commissions for churches, monasteries, convents and cathedrals.