Fr Darach Mac Giolla Cathain is a native of St Michael the Archangel Parish, Belfast. He received his primary education at Bunscoil Phobal Feirste and St Oliver Plunkett Primary School and secondary education at La Salle Boys', Belfast.
He began his undergraduate studies in Accountancy at the University of Ulster at Jordanstown before studying Philosophy at the Queen's University of Belfast and commencing formation for the priesthood at St Joseph's Junior Seminary. His formation continued in the Pontifical Irish College, Rome where his Undergraduate Theological studies were at the Gregorian University and Postgraduate studies in Spirituality were at the Angelicum University.
Following a Deaconate year in the parish of Upper Mourne (Kilkeel), Fr Darach was ordained to the Presbyterate of Down & Connor in the Church of St Michael the Archangel on the Feast of Our Lady of Fatima, 13th of May 2000, the first priest ordained for the diocese in the Third Millennium.
Following a summer appointment to Nazareth House and the Belfast Hospitals, his first appointment was as a curate to St Paul's Parish on the Falls Road and as a chaplain to the Deaf community.
He was appointed to the Parish of St Luke as a curate on the 9th of August 2002. He continues to minister to the Deaf Community and is now a Chaplain to the Irish Medium Schools in the Diocese.