Book 22
8. [...] In the same place [in Calama] there lived a man of the first rank in his order, named Martialis, already heavy with age and extremaly hostile to the Christian religion.
When he fell ill, his son-in-law, a Christian, prayed for him at the shrine (memoria) of St Stephen, took some flowers from the altar and put them on the head of Martialis, who was sleeping.
And behold, just before dawn Martialis shouted out to run and get the bishop, who happened to be with me in Hippo at the time. When he heard that the bishop was away, he asked the presbyters to come. They came; Martialis announced that he believed, and to everyone's amazement and joy he was baptized.. [...]
(trans. W. Babcock, slightly altered)