326 Mr. PETRIE'S Inquiry into the Origin and 



The other is thus inscribed : 



" OR DO ChaDgaH." 



"A PRAYER FOR TADGAN." 



This tomb was probably that of Tadhgan, chief of Teffia at the close of the 

 ninth century, from whose eldest son, Catharnach, are descended the ancient 

 family of O'Catharnaigh, of Kilcoursey, now Fox, and from whose second son, 

 Duibhcen, the family of O'Duiginan derived their name and origin. The tomb 

 of this Duibhcen is also at Clonmacnoise, and as it exhibits a good specimen of 

 Irish monumental carving, of an earlier date than those preceding, and at the 



mcCoiisha.il 



been 



same time furnishes a remarkable evidence of the truth of the Irish genealogies, 

 I have been induced to insert a copy of it in this place. It will be seen that the 



