Ragyndrudis Codex

The Ragyndrudis Codex is one of three "Bonifatian" books, a set of three manuscripts traditionally considered to have been in the possession of Saint Boniface.

Bonifatius Fischer believes that the glosses in the margin of the Epistle of James could well be by the saint, since they are written in a southern English hand in the early eighth century.

The name "Cadmug" (also read as "Vidrug" and "Cadmag") appears on 65r; on the verso, is noted—erroneously—that Boniface himself wrote the manuscript, an error dating from the time when it was loaned to Arnulf of Carinthia, at the end of the ninth century.

No successful identification with a historical Ragyndrudis has been made, but a laywoman called Ragyndrugis who was linked (through marriage) to the Abbey of Saint Bertin in Saint-Omer, France, is a likely candidate according to Rosamond McKitterick.

[7] The manuscript is written in a Luxeuil-derived minuscule from the late seventh or early eighth century;[7] McKitterick argues the origin may be Corbie Abbey in Picardy in northern France – the abbey was founded by monks from Luxeuil, and scribes from the continent and the British Isles worked side by side there: the handwriting shows both continental and insular characteristics.

While the earliest hagiographical accounts of Boniface and his martyrdom had him order his comrades to lay down their arms and accept martyrdom willingly, later accounts added that he held a book over his head to protect himself – this is what Boniface scholar Lutz von Padberg calls the Schutzhypothese, the "protection hypothesis", and it has become an enduring image of the saint.

Still, it is possible that it was one of the books that were found afterward in Friesland and brought back to Utrecht, whence they traveled up the Rhine to Mainz and then Fulda.

[17][18] Michael Drout supposes that J. R. R. Tolkien's Book of Mazarbul in The Fellowship of the Ring, especially its physical condition, owes something to the Ragyndrudis Codex.