La diffusione dell’Expositio libri comitis di Smaragdo di Saint-Mihiel e una serie di opere inesplorate nel ms. Madrid, Real Academia de la Historia, Cód. 80

The essay analyses the manuscript dissemination of Smaragdus of Saint-Mihiel’s "Expositio libri comitis" through a census that reveals 69 new witnesses of the work. It also specifically examines its reception in the manuscript Madrid, Real Academia de la Historia, Cód. 80, possibly compiled in the south of the Iberian peninsula around the second third of the 9th century. The codex, in all its different but intrinsically related codicological units, presents numerous evidences of the use of Smaragdus’s work in different forms: 1) in three series of marginal glosses as supplementary interpretations to the corresponding patristic texts transmitted by the codex; 2) as an interpolation in the text of Victorinus of Pettau’s commentary on the Apocalypse; 3) in an excerpt from the part containing the interpretation of the Gospel of Matthew on the Passion of Christ; 4) in a commentary on the Gospel of John composed of several exegetical excerpts from the Expositio libri comitis that are rearranged and recombined. These last two attestations of Smaragdus’s work in the Madrid codex have been listed in the catalogues as anonymous exegetical chains, but they have not been thoroughly investigated yet. Cód. 80 documents the extensive deconstruction and transformation of the Expositio libri comitis by an author who likely worked in Mozarabic Spain. The investigation of the various reuses to which Smaragdus’s work has been subjected also reveals interesting information about the realisation of the manuscript and the context of its composition.