Il canzoniere trobadorico J e il ms. Conventi Soppressi F IV 776: constitutio codicis e storia esterna The article traces the different stages and places of production of the ms. Conventi Soppressi F IV 776 of the Biblioteca Nazionale Centrale in Florence, which preserves Andrea da Grosseto’s Italian translation of Albertano da Brescia’s Latin Trattati Morali, a drafting of anonymous Fiori di Filosafi and the Occitan collection known as ms J. Moreover, the essay tries to establish a plausible terminus ante quem for the draft of ms J, by identifying its first owner.