A formulary or commonplace book compiled by Richard de Bury, otherwise Richard Aungerville, civil servant, diplomat, Privy Seal 1329-1333, Lord Chancellor and bishop of Durham from 1333, containing his transcriptions of some 1,500 documents, mostly official administrative and courtesy correspondence, both foreign and domestic, mainly of English origin or sent to Englishmen from the court of Rome (ff. 1-105 verso, 116 verso-173, 179-239); together with a treatise on eloquence (ff. 105 verso-116).
Some five hundred of the letters were published in The Liber Epistolaris of Richard de Bury, ed. by N. Denholm-Young (London, 1950); a further three hundred, calendared by Denholm-Young, were previously published in Thomas Rymer's Foedera (London, 1816-30) and elsewhere. Full indexes are provided by Denholm-Young.