This paper proposes a critical edition of an anonymous and unpublished poem in praise of Caterina Cornaro (1454-1510), taken from the manuscript Bergamo, Biblioteca Comunale "Angelo Mai", Cassaforte 3 01 (copied between 1490 and 1510). Some textual and biographical elements would lead to assigning the operetta to Giuliano Perleoni, known as Rustico Romano, chancellor of the King of Naples, Ferdinand of Aragon, and author of the Perleone (Naples, for the types of Aiolfo de Cantono, 1492). [ABSTRACT FROM AUTHOR]