Pope JOHN DE MEDICI, the son of the illustrious Lorenzo, was born in 1475, at Florence, and was nominated a cardinal in his thirteenth year. In 1505, he was made governor of Perugia; was intrusted with the command of the Papal army in 1511; and was made prisoner, in the following year, at the battle of Ravenna. He attained the Papal crown in 1513, on the death of Julius II. He died in 1521. Leo was one of the most munificent patrons of learning and of the arts; but he was prodigal, and on some occasions grossly violated the principles of justice. To his shameless sale of indulgences, to raise money to complete St. Peter's Church at Rome, and other extravagances, the world is indebted for the reformation of the church by Luther and others.