 In 354 Gallus, who had imposed a rule of terror over the territories under his command, was executed.Julian was summoned to Constantius' court in Mediolanum (Milan) in 354, and held for a year, under suspicion of treasonable intrigue, first with his brother and then with Claudius Silvanus; he was cleared, in part because Empress Eusebia intervened on his behalf, and he was permitted to study in Athens (Julian expresses his gratitude to the empress in his third oration).While there, Julian became acquainted with two men who later became both bishops and saints