An illuminated and noted missal of the mid-fifteenth century, probably copied in a London workshop, and apparently of Sarum use. The Rev. W.H. Maskell's theory that it was the sole survivor of the 'use of Bangor' is not substantiated by subsequent authorities on liturgical studies. Originally produced for the church of Great Easton, Essex, for the Calendar includes its dedication, at 4 August ('Dedicacio ecclesie sancti Egidii de Eyston. ad montem'); a note by a later hand at 20 August of the death of William Jaye ('Obitus Willelmi Jaye') and an erased inscription in the bottom margin, show that the manuscript was still at Great Easton in 1508.
References to the pope (e.g. f. 261), to purgatory (f. 256 verso) and to St Thomas of Canterbury (e.g. f. 24) are, as usually, erased or cancelled, particularly so in the calendar. Responses for the marriage service are given in English (f. 240), with English forms of the priest's address to couples added in a late-15th or early-16th cent. hand on f. 239 verso.