Liber glossarum is one of the most important encyclopaedic compilation of the early Middle Ages. Halfway a vocabulary, a dictionary of synonyms and an encyclopaedia, it was compiled in France, probably in the scriptorium of Corbie, in the second half of the eighth century. In northern Italy it was widespread probably since the second half of the following century; and it is right to the end of the ninth century that can be dated, on the palaeographic evidence, this fragment kept at the ‘Archivio di Stato’ of Udine, the element of a corpus consisting of more than a thousand fragments and membra disiecta of medieval codices employed between the fifteenth and the sixteenth century as covers of collected acts and minutes of Friulian notaries. This fragment contained the acts of Sebastiano Decio, notary in Udine; the date 1530 written in the inter-column and the mark of a horizontal fold evidence the time and ways of its reuse. In Mirella Ferrari’s opinion, our fragment should be witness of a shortened redaction of the Liber, however referable to the Italian-German family of the Liber glossarum.