Ó Cléirigh Book of Genealogies

The O'Clery Book of Genealogies, also known as Royal Irish Academy Ms. 23 D 17, was written by Cú Choigcríche Ó Cléirigh, one of the Four Masters, who was transported in the 1650s to Ballyacroy, County Mayo, "under the guidance of Rory O'Donnell, son of Col.