Lorcán's heart was returned to Ireland and is preserved in a reliquary in Christ Church Cathedral, Dublin. 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. At a special evensong ceremony in Christ Church on 26 April 2018, archbishop Michael Jackson received the heart from a senior Garda.
