In a cursory passage of a recent paper I happened to question, on the basis of new textual acquisitions, the current hypothesis about the chronology of the earliest attestations of the particle a nowadays occurring in Romanesco vocative expressions. Further textual findings now allow us to deepen the discussion, dating the first known instances of vocative a back to the first half of the 19th century, which is surely not too relevant on a purely chronological level, but nevertheless seems to be of some importance in the more interesting field of linguistic history. In fact, this suggests that a constantly critical attitude is needed as to the value of any literary witness of modern Romanesco, including that of Belli’s Sonetti.