The historical indications about this grapevine are very scarce and generally do not appear earlier than the second half of XIX century. Among the ampelographers from 1800, the only count di Rovasenda (1877) mentioned the ‘Uva Bosco’ (Bosco grape) as from Liguria. All the other authors, included Giorgio Gallesio who did not neglected any grape from Liguria of a certain importance, omitted this variety. According to Dell’Olio e Macaluso (1965), who edited for the Ministry of Agriculture the ‘Bosco’ monograph, only in the last decades of XIX century the variety appeared in the lists of grapes related to the Ligurian provinces, so that a certain cultural importance could be presumed in the areas of Genoa and, at a lesser extend, of Savona. Its culture would expand towards the eastern part of the region only after the phylloxera crisis, to become, together with Albarola and Vermentino, one of the major varieties of Cinque Terre, present till the area of Sarzana at the extreme east side of the region.
What previously stated about the late historical appearance, together with a somewhat “distance” from the other traditional grapes from Liguria under the morphological features, do support for Bosco a likely allochthon origin and the introduction into the region not earlier than 1800.