The numerous pedigrees into which this family ramified occupy about half of the present tract. This is more likey to be a scribal error than a genealogical fiction. The floruit of Carthach is c. 1050. A number of the pedigrees of this group are obviously linked by fictitious ancestors to earlier stocks of historical celebrity. Some of them may represent the ancient Manaigh or Monaigh who occupied the territory and gave their name to it before its occupation in the 4th or 5th century by the ancestors of the Cremthainne kindred.
Topograhical data are extremely rare.
The spelling of names is at times careless, at times capricious. The punctuation is often defective. The connexions between branches of the same stock are not always explicit or easily traced. The tract is therefore likely to provide a valuable supplement to the chronicle for the purposes of the local history. It will also be observed that not a few of the persons named in the tract are described as members of the local clergy or of religious orders.