This very valuable manuscript consists of seventy-six leaves written on vellum and parchment. The table of contents and collection of documents occupying seventy leaves, are beautifully and plainly written in the same hand in the style of the end of the reign of Edward II and in Latin. The earliest document transcribed is the grant of Donald O’Brien, and though undated, is believed to refer to the year 1194. An additional portion, containing the procuration tables and rental of the diocese, in a different and later style of hand, was added by Cornelius O’Dea in 1418. There are some inquisitions relating to Church property also inserted by later bishops.
At the time of the Reformation the book passed into the
hands of the Protestant bishops. There are some documents inserted in
the end of it by Bishop Adams (1604-1625). It is said to have been in
the possession of Bishop Webb, who died a prisoner about 1642.