The first appearance of the word "grottesche" appears in a contract of 1502 for the Piccolomini Library attached to the duomo of Siena. They were introduced by Raphael Sanzio and his team of decorative painters, who developed "grottesche" into a complete system of ornament in the Loggias that are part of the series of Raphael's Rooms in the Vatican Palace, Rome. "The decorations astonished and charmed a generation of artists that was familiar with the grammar of the classical orders but had not guessed till then that in their private houses the Romans had often disregarded those rules and had adopted instead a more fanciful and informal style that was all lightness, elegance and grace." In these grotesque decorations a tablet or candelabrum might provide a focus; frames were extended into scrolls that formed part of the surrounding designs as a kind of scaffold, as Peter Ward-Jackson noted. Light scrolling grotesques could be ordered by confining them within the framing of a pilaster to give them more structure. Giovanni da Udine took up the theme of grotesques in decorating the Villa Madama, the most influential of the new Roman villas.