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Fragments

which first belonged to Giovanni Gioviano Pontano, Giovanni Gioviano Pontano (1429–1503) was a prominent Italian humanist, diplomat, and poet. later to Cardinal Pietro Bembo, Pietro Bembo (1470–1547) was an influential scholar and collector of ancient texts.
then to Fulvio Orsini Fulvio Orsini (1529–1600) was a renowned humanist and librarian for the Farnese family whose collection became a cornerstone of the Vatican Library. = among the same?
Fulvio's books they are numbered. folio A "folio" refers to a single leaf of a manuscript, where "fol. 25" indicates its position in a catalog or volume. 25.