344 



which we learn a very remarkable fact, hitherto I believe 

 unnoticed by our historians, that Cormac's Glossary was 

 compiled from the notes or glosses added by Cormac Mac 

 Cuilionan, the celebrated king and bishop of Cashel, to the 

 miscellaneous compilation called the Psalter of Cashel. Cor- 

 mac was killed in the battle of Belach Mnghna, nowBallagh- 

 moon, in the County of Kildare, near Carlow, A. D. 903. 



Fol. 93, b. A tract, with the following Latin title, " De 

 causis quibus exules aquilonensium ad mumonienses adducti 

 sunt," beginning If^o cecamup pocono coipji, &c. 



Fol. 94, h. The history of the war between Oilill Olum 

 and Mac Con. This is a most valuable document. Oilill 

 Olum was king of Muuster in the third century. He de- 

 prived Mac Con, his stepson, of his lawful inheritance. 

 Mac Con rebelled, assembled his followers, but was defeated 

 by Oihll at the battle of Ceannabrat, a place on the borders 

 of the counties of Cork and Tipperary. The defeated prince 

 fled to Scotland, where he had influence enough to raise a 

 large force of foreign adventurers, with whom he returned 

 to Ireland, and again encountered the troops of his step- 

 father in the bloody battle of Moy Mocroimhe, in the county 

 of Galway. In this battle Oilill was aided by Art, son of 

 Conn of the hundred battles, then monarch of Ireland ; but 

 was defeated. Art was slain, and with him the six sons of 

 Oililljwith the flower of the Irish chiefs. Mac Conn assumed 

 the sovereignty of Ireland, and continued to reign until driven 

 back to Munster by Cormac Mac Art, several years after- 

 wards, who thus revenged the death of his father. 



There is an imperfect copy of this tract (a MS. of the 

 early part of the twelfth century) in the Library of Trinity 

 College, Dublin, H. 2, 18. 



Fol. 96, a. The history of the battle of Mucruimhe, be- 

 ginning ^uiD eujan mop do each mucpuinie. 



Fol. 99, b. The Expulsion of the Decies from Tara by 

 Cormac Mac Art. 



