Raphael
By the end of 1508, Raphael had moved to Rome, where he lived for the rest of his life. He was invited by the new Pope Julius II, perhaps at the suggestion of his architect Donato Bramante, then engaged on St. Peter's Basilica, who came from just outside Urbino and was distantly related to Raphael. Unlike Michelangelo, who had been kept lingering in Rome for several months after his first summons, Raphael was immediately commissioned by Julius to fresco what was intended to become the Pope's private library at the Vatican Palace. This was a much larger and more important commission than any he had received before; he had only painted one altarpiece in Florence itself. Several other artists and their teams of assistants were already at work on different rooms, many painting over recently completed paintings commissioned by Julius's loathed predecessor, Alexander VI, whose contributions, and arms, Julius was determined to efface from the palace. Michelangelo, meanwhile, had been commissioned to paint the Sistine Chapel ceiling.
Giulio Romano
Giulio Romano was born in Rome; the "Romano" refers to this. As a young assistant in Raphael's studio, he worked on the frescos in the Vatican loggias to designs by Raphael and in Raphael's "Stanze" in the Vatican painted a group of figures in the "Fire in the Borgo" fresco. He also collaborated on the decoration of the ceiling of the Villa Farnesina. Increasingly he became the master's right-hand man, despite his relative youth. After the death of Raphael in 1520, he helped complete the Vatican frescoes of the life of Constantine as well as Raphael's "Coronation of the Virgin" and the "Transfiguration" in the Vatican. In Rome, Giulio decorated the Villa Madama for Cardinal Giuliano de' Medici, afterwards Clement VII. The crowded Giulio Romano frescoes lack the stately and serene simplicity of his master.