From A Compendium of Irish Biography, 1878
Dunan, or Donat, Bishop of Dublin, 1038 — the first Dane called to that office. He is worthy of remembrance as having, in 1038, by the aid of the Danish King Sitric, built the Cathedral of the Holy Trinity (Christ Church) "in the heart of the city of Dublin." A correspondence, part of which was available in Ware's time, was maintained between him and Lanfranc, Archbishop of Canterbury, concerning baptism. Bishop Dunan died 6th May 1074, and was buried near the high altar of the cathedral he had built.
339. Ware, Sir James, Works: Walter Harris. 2 vols. Dublin, 1764.