In 1561 he published the "Manifesto of the ill. Signor Lodovico Birago with other writings, from which we know what happened between him Signor and Scipion known as de' Vimercato" where he explains why he could not accept the challenge to a duel with Scipione Vimercati fixed in the lands of Ludovico Pico, lord of Mirandola, since for Birago Vimercati was not noble. The Manifesto contained a group of documents that were supposed to prove the obscure birth of Vimercati and an opinion by G. A. Giacomello, doctor of law and royal auditor, who supported the impossibility of the duel. Birago's accusations were skillfully countered by Vimercati who invalidated all the documents he cited as false and made use of the opinions of illustrious Italian champions of chivalric precepts to demonstrate that Birago was just a coward.