Maurice Regan
Regan, Maurice, an Irishman, was secretary and interpreter to Dermot MacMurrough in his dealings with the Anglo-Normans. A valuable fragment of Irish history, relating events between 1169 and 1173, was taken down from Regan's lips in Norman French verse. An English translation by Sir George Carew will be found among the Carew Papers, and may also be consulted in Harris's Hibernica (Dublin, 1747). The last-mentioned edition is especially valuable on account of Harris's appendix, giving a list of "such English and Welsh adventurers as assisted in the reduction of Ireland during the first sixteen years of the invasion." Regan's narrative breaks off abruptly. It is probably but a fragment of a longer manuscript.
Sources
69. Carew Manuscripts, Calendar. 4 vols. London, 1869-'73.
160a. Hibernica, or some Antient Pieces relating to Ireland: Walter Harris. Dublin, 1770.