From the department of “just in case you were wondering”…
We know that the Romans used the word Lambrusco.
In ancient Latin, it appears as lambruscum or labrusca. It denoted “wild grape varieties” and can be found in the works of writers like Pliny and Columella.
But the earliest known mention in the Italian language dates back to the early 14th century when Bolognese jurist and agriculturalist writer Pietro de’ Crescenzi used it to refer to the specific grape variety. At least so it is believed (according to top Italian lexicographers).
Images via the Wikipedia entry for Pietro de’ Crescenzi.