This part of the manuscript contains the text De Perseverantia Religionis by Maffeo Vegio (1407-1458), an Italian poet. This is one of his works in prose. This version of the text has seven books, while the printed versions only have six.

A title on f. 1r reads: Maphei Vegii de perseverantia liber incipit. Et primo de tranquillo statu religionis. The text starts on f. 1r with the following words: Cum graves sepe ut sit in rebus humanis sustinetur. And ends on f. 166r with the following words: quem polliciti sumus conserendum pastinandumque veniemus.

This part of the manuscript is written in a clear sloping italic hand which grows smaller at the end. The vellum is very fine, and the hand is good, but many of the pages have suffered from damp and become almost illegible.

The book initials in Part 1 are burnished gold ornamented with vine-leaf pattern in blue, vermilion, and green, that at the beginning having a partial border of foliage, flowers, and gold-rayed discs. Chapter initials are plain red Roman capitals.