St. Peter’s Basilica

The Vision of Constantine. October 27, 312.

Constantine was the son of Constantius, who had served as a Caesar (a junior emperor) of the Western Roman Empire under Maximian before succeeding Maximian as Augustus (senior emperor) in 305. Constantius’ death in 306 sparked a conflict over who would succeed him. Though Constantine had the support of his father’s army, he allowed Severus, his father’s Caesar, to become Augustus. Maxentius, the son of Maximian, was angered that he was passed over and declared himself Augustus. He defeated the Severus and Galerius, the Augustus of the East, in 306 and 307. In 311, Maxentius declared war on Constantine, the greatest threat to his power. In the spring of 312, Constantine led his army toward Maxentius in in Rome. After routing Maxentius’ forces in northern Italy, Constantine approached Rome i...

The Battle of Lepanto. October 7, 1571.

Venice had attempted to check Ottoman expansion in the eastern Mediterranean until 1540 but then, exhausted and despairing of support, made a humiliating peace with Süleyman I. His successor, Selim II, was determined to acquire the Venetian outpost of Cyprus and, when the Venetians refused to cede the island, invaded it in 1570. Venice appealed for help to Pope Pius V, who had tried since 1566 to form an alliance of Roman Catholic states. France and the Holy Roman Empire were preoccupied with the sweeping changes wrought by the Reformation. Spain offered hope, but Philip II, with an empty treasury, was faced with revolts in Andalusia and the Netherlands. Venice also deeply distrusted Spanish influence in Italy. Pius, however, was committed to drawing Spain, Venice, and the smaller Italian ...

Lost Password

Register