High Quality Content by WIKIPEDIA articles! Giuliano de` Medici (1453 – April 26, 1478) was the second son of Piero de` Medici (the Gouty) and Lucrezia Tornabuoni. As co-ruler of Florence, with his brother Lorenzo the Magnificent, he complemented his brother`s image as the "patron of the arts" with his own image as the handsome, sporting, "golden boy."