From Walsh's History of the Irish Hierarchy: With the Monasteries of Each County, Biographical Notices of the Irish Saints, Prelates, and Religious, 1854, c. xliv, pps. 421ff:
Priory of the Holy Trinity commonly called Christ church. Sitric the Danish prince of Dublin is said to have given Donatus the bishop of that see a site on which to erect a church in honor of the blessed Trinity. The year of the grant is marked in the black book of Christ church as taking place AD 1038.
On the advancement of St. Lawrence O'Toole to the see of Dublin AD 1163 he instituted the canons regular of the order of Arras instead of the secular canons.
AD 1176 died Richard earl of Pembroke called Strongbow of a cancerous sore in his leg and was interred in the church of the Holy Trinity within sight of the holy cross.
AD 1546 the tomb of a bishop who had been many centuries interred was this year opened the body was found whole and uncorrupted with a gold chalice rings and episcopal vestments.
Relics religiously preserved in this church: A crucifix said to have spoken the staff of Jesus; St. Patrick's altar; a thorn of our Saviour's crown; part of the Virgin Mary's girdle; some of the bones of SS Peter and Andrew; a few of those of the holy martyrs St. Clement, St. Oswald, St. Faith, the abbot Brendan, St. Thomas a Becket; St. Woolstan bishop of Worcester and St Lawrence O'Toole, all of which have been destroyed by the English reformers of the sixteenth and seventeenth centuries in detestation of popery and idolatry.
The cloisters and other buildings attached to this magnificent church have been removed, the church alone remains, reminding the spectator of the splendor of ancient days and of the piety and faith of the Catholic church as exemplified in works of art and architectural taste. The court yard and the aisles of Christ church are at present nothing more than the promenade of the idle and the curious.