Polerio, Giulio Cesare
In 1574, Giulio Cesare Polerio (1548-1608) recorded the important opening variations of his time. He was the first to mention the King’s Gambit, the Sicilian, the Two Knights Defense, and the Dutch. In 1584 he wrote about the exploits of Ruy Lopez, Paoli Boi, and Leonardo di Cutri in Madrid. He was a servant of Leonardo. He was called l’Apruzzese. Polerio was later employed by Giacomo Boncompagni, Duke of Sora, and the illegitimate some of Pope Gregory XIII. The duke was a patron of chess during the Renaissance.