[2] His notes on the Posterior Analytics, generally Thomist, were used by Galileo.
This occurred around 1588-1590, and it was through Vallius that Galileo learned the work of Jacopo Zabarella.
[3][4] It is now accepted that Vallius is the source of two logical treatises by Galileo.
[5] Vallius was plagiarized by Ludovico Carbone, in his 1597 Additamenta ad commentaria doctoris Francisci Toleti in logicam Aristotelis, which were Additions to the logic of Franciscus Toletus.
[6] In it he sided with Benedictus Pereyra against Giuseppe Biancani.