The story of Bl. Anthony's capture by pirates, of his apostasy, recantation and glorious death, comes to us from two very trustworthy witnesses who both knew the saint. One was his fellow-captive and an eye-witness of his martyrdom, the other was the Dominican provincial in Sicily, from where Anthony had sailed to imprisonment and death. The first of these was a Jeronymite hermit, Fr Constantius of Capri, who had been carried captive to Tunis some considerable time before the arrival of Anthony. Shortly after the latter's martyrdom on 10 April 1460 he wrote a long account of all that had happened to him, and sent it to the Dominicans in Sicily, whose provincial, Fr Peter Ranzano, had welcomed Anthony to the island three years before. Fr Ranzano embodied this account in a letter he wrote to Pope Pius II, and added details of his own which he had evidently learned from the Genoese traders in Tunis on their visits to Sicily.