Tiberius meanwhile, who did not relax his attention to business, and found solace in his work, occupied himself with the causes of citizens at Rome and with petitions from allies. Decrees of the Senate were passed at his proposal for relieving the cities of Cibyra and Ægium in Asia and Achaia, which had suffered from earthquakes, by a remission of three years' tribute. Vibius Serenus too, proconsul of Further Spain, was condemned for violence in his official capacity, and was banished to the island of Amorgus for his savage temper. Carsidius Sacerdos, accused of having helped our enemy Tacfarinas with supplies of grain, was acquitted, as was also Caius Gracchus on the same charge. Gracchus's father, Sempronius, had taken him when a mere child to the island of Cercina to be his companion in exile. There he grew up among outcasts who knew nothing of a liberal education, and after a while supported himself in Africa and Sicily by petty trade. But he did not escape the dangers of high rank. Had not his innocence been protected by Ælius Lamia and Lucius Apronius, successive governors of Africa, the splendid fame of that ill-starred family and the downfall of his father would have dragged him to ruin.