14 November 1180 AD: The death occurred of St Laurence O’Toole / Lorcan Ua Tuathail at Eu in Normandy on this day. He is the patron Saint of Dublin. He was born in Kildare in about the year 1128 and was educated at the Monastery of Glendalough where he became a prominent member of the religious community there. Being the brother in law of the King of Leinster, Diarmait Mac Murchada, further enhanced his status.

In 1161 he obtained the key ecclesiastical appointment of Archbishop of Dublin and in the following year was consecrated as such in a great ceremony at Christ Church in the city by Gilla Isu the Primate of Armagh. O’Toole’s elevation was a novelty in that he was the first Gaelic leader of the Church in Dublin and that he owed his position to the See of Armagh and not that of Canterbury in England. The Archbishop was a man of great piety and charity and he founded a number of religious houses including the one of All Hallows where Trinity College now stands. Once a year he retreated to Glendalough where he entered a cave for 40 days to fast and pray.

However when Henry II crossed into Ireland and set up Court in Dublin he was a deft enough operator to ensure that he stayed in the Kings’ good standing. He acted as a go between in the delicate negotiations with Rory O’Connor the King of Ireland and Henry in his role as King of England. Indeed he was one of the signatories of the Treaty of Windsor in 1175 which recognised Henry as ‘Lord of Ireland’ - but not as its King.

In April 1178 he entertained the papal legate, Cardinal Vivian, who presided at the Synod of Dublin. He also attended in Rome the great Third Lateran Council in March 1179. Pope Alexander III had summoned it with the particular object of putting an end to the schism within the Church and the quarrel between the Holy Roman Emperor and the Papacy. About three hundred fathers assembled from the provinces of Europe and some from the Latin east, and a single legate from the Greek church. Laurence O’Toole returned home with the title of Papal Legate, which was a mark of the influence he had gained in Rome.

But his further term in office was to be a short one as in the following year he left Dublin to track down the peripatetic Henry in his wanderings across his patchwork quilt Empire of polities. His mission was to bring urgent matters in Ireland for his consideration. After three weeks of detention at Abingdon Abbey, England he followed Henry II to Normandy. Taken ill at the Augustinian Abbey of Eu, he was tended by Abbot Osbert and the canons of St. Victor in his confinement, and it was there that he breathed his last. His tomb is in the crypt, under the Collegial Church at Eu. Many people still go there to pray. Laurence was canonized in 1225. His remains disappeared during the Revolution but his heart was returned to Ireland where it is in the keeping of Christchurch Cathedral  Dublin.  

Postscript: 'Lorcán's heart remains in Christ Church Cathedral despite the Irish Reformation, although devotion to saints is more prominent in Roman Catholicism than in the Anglicanism of the Church of Ireland which owns the cathedral. The reliquary was stolen in 2012, with the Dean of Christ Church saying "It has no economic value, but it is a priceless treasure that links our present foundation with its founding father". It was recovered in Phoenix Park in 2018 after a tip-off to the Garda Síochána. Media reported that the unidentified thieves thought it was cursed and caused family members' illnesses'

https://en.wikipedia.org/wiki/Lorc%C3%A1n_Ua_Tuathail