Thomas of Ireland (c.1265 - c.1329), also known as Thomas Hibernicus, came from county Kildare in Ireland and became a Fellow of the College of the Sorbonne, in Paris. At his death, he bequeathed the books he had written to the Sorbonne, including the work De Christianae religionis, which deals with what he classifies as the three fundamental points of Christian religion: faith, obedience to the Ten Commandments and avoidance of the seven deadly sins. For this reason, it is also known with the title De tribus punctis Christianae religionis ('On the three points of Christian religion'); a variation of this title is used in the manuscript.

The text begins on f. 63r with the words Incipit summa de tribus punctis essencialibus Christiane religionis. Religio munda et immaculata apud deum; it ends on f. 81v with the words in quo debet esse maior discrecio. F. 76v has been left blank except for the sentence Hic non esse defectus to indicate that there is no omission in the text.

It is followed by a colophon (i.e. end note) which was part of the text the scribe was copying (f. 81v). The colophon begins with the words Hii sunt puncti religionis christiane collecti per magister Thomam Ybernicum Anno domini m.ccc.xvi and ends Datum Prage anno domini m.ccc.xlix. die duodecima mensis novembris archiepiscopatus domini nostri Arnesti anno sexto. It indicates that the text had been written by Thomas of Ireland in 1316 and that it was later copied by an anonymous scribe in Prague in 1369.

A second colophon which indicates that the scribe was again Sigfrid Slimdlin follows the first: Rescriptus hic tractatus / Per fratrem Sifridum vocitatus / Domino Oswaldo priori oblatus / Spero quod sit ei gratus, accompanied on the side by 1464 sabbato ante dominica Oculi. The date is the saturday before the third Sunday of Lent (Dominica Oculi), in 1464 (see also descriptions under MS.78/ff. 1r-49r; MS.78/ff. 98r-104v).