According to Peck, the MS. once belonged to William Chaderton, bishop of Lincoln (Desiderata Curiosa, 1779 edn, p. xv). On the original cover of the book (which consists of two leaves from a 14th cent. missal), appear the words, 'This book belonges to Dr Tanner'. In 1732, the date of the first edition of Peck's work, the MS. was in the possession of Samuel Knight DD, prebend of Ely and rector of Bluntisham, Hunts. (see 1779 edn p. xv). After Knight's death in 1746, the MS descended to John Percy Baumgartner of Milton, Cambs., who presented it to the Library in 1859.