Glendalough is still a place where prayer, silence and pilgrimage can be a lifesaving moment of respite, says Archbishop Diarmuid Martin.

"Those who perpetrate and sponsor such violence merit nothing but rejection and disdain. They belong behind bars and their business of death must be undermined and destroyed.”

The 12th century Irish saint was heavily involved in the events of his time – but he still found time to go on an annual 40-day prayer retreat.

“People from abroad are often astonished at the level of antipathy to the Church displayed in our country.”

Fr Christopher Derwin at just 32 years old is the youngest diocesan priest in the archdiocese of Dublin while Fr Paul Glennon is 41.