"De Monarchia," 1310-1313: Treatise of political philosophy in Latin and arranged in three books composed in the years immediately following the arrival of Henry VII in Italy. The Empire was necessary to the well being of the world and the last book considered whether the Emporer
1559 Italy-Rome: "De Monarchia" banned by Pope Paul IV and the Index of Trent for asserting that the authority of Kings was derived from God, not through God's Vicar on earth, the Pope.
1581 Portugal-Lisbon: "La Divina Commedia" prohibited by Church authorities.
1581 Portugal-Lisbon: "La Divina Commedia" prohibited until all copies were delivered to the Inquisition for correction.
Source: Banned Books 387 B.C. to 1978 A.D., by Anne Lyon Haight, and Chandler B. Grannis, R.R. Bowker Co, 1978.