Others associated with Tallaght were: Airennan (10 February), second abbot, Eochaid (28 January), second bishop, Joseph (5 January), and Dichull (d. 889).
In 1179 Tallaght, with its subsidiary chapels of Killohan and St. Bride's, was united to the Archdiocese of Dublin by a Bull of Pope Alexander III (20 April 1179), and in 1223 the deanery of Tallaght was annexed to St. Patrick's Cathedral by Archbishop Henry de Loundres.
In 1324 Alexander de Bicker built or restored an archiepiscopal manor at Tallaght, which was fortified later to protect the English in Dublin from the attacks of the O'Byrnes.
Reformation and after
At the Reformation it passed into the hands of the Protestant Archbishops; its ruins and grounds were acquired in 1812 by the Dominican Order, who erected a novitiate and church there.
- Herbermann, Charles, ed. (1913). "Monastery of Tallaght". Catholic Encyclopedia. New York: Robert Appleton Company.
- Mervyn Archdall, Monasticon hibernicum, ed. Moran (Dublin, 1873);
- Fitzgerald in Journ. Kild. Archaeol. Soc., V (Dublin, 1908);
- D'Alton, Hist. of Co. Dublin, 761 sqq.