[4] The text is divided according to the chapters (known as κεφαλαια / kephalaia), whose numbers are given in the margin, and their titles (known as τιτλοι / titloi) written at the top of the pages in red ink.

"[6]: 335 In the Book of Revelation its text belongs to the Byzantine text-type but with a large number of unique textual variants, in a close relationship to Uncial 046, and Minuscule 69.

An engraved facsimile of the relevant page can be seen in Thomas Hartwell Horne, An Introduction to the Critical Study and Knowledge of the Holy Scriptures (London: Cadell and Davies, 1818), vol.

[7]: 88  Its earliest known owner was Froy, a Franciscan friar, then Thomas Clement (died 1569), then William Chark (died 1582), then Thomas Montfort (from whom it derives its present name), then Archbishop Ussher, who caused the collation to be made which appears in Bishop Brian Walton's Polyglott (Matthew 1:1; Acts 22:29; Romans 1), and presented the manuscript to Trinity College.

[3][11] Erasmus cited this manuscript (called by him as Codex Britannicus) as his source for his (slightly modified) Comma in his third edition of Novum Testamentum (1522).

[3]: 146-47 [7] Despite this being a commonly accepted fact in modern scholarship, some people in the past such as Thomas Burgess (1756 – 19 February 1837) have disputed the identification of Erasmus' "Codex Britannicus" as the same manuscript as the Codex Montfortianus, instead proposing that it is a now lost Greek manuscript.