There are some remains of the ecclesiastic establishments at Bonamargy, where the earls of Antrim are buried, Kells, Glenarm, Glynn, Muckamore and White Abbey.
There is a notable collection of early Irish manuscripts, including the magnificently ornamented Book of Kells, containing the gospels.
The highest summit in the south of Scotland - Merrick (2764 ft.) - consists of Silurian strata much altered by proximity to the granite, while the rest of the more prominent heights (all in Kirkcudbrightshire) - Rinns of Kells (2668 ft.), Cairnsmuir of Carsphairn (2612), and Cairnsmore of Fleet (2331) - are formed of granite.
Was bounded by a line drawn from Dundalk to Kells, thence to Naas, and from Naas E.
Thus there were coarbs of Columba at Iona, Kells, Derry, burrow and other places.
At the synod of Kells (1152) there was established that diocesan system which has ever since continued without material alteration.
The work of education was partially done by the great abbeys, boys of good family being brought up by the Cistercians of Dublin and Jerpoint, and by the Augustinians of Dublin, Kells and Connel, and girls by the canonesses of Gracedieu.