St. Kirdjun
Kirdjun was perhaps one of Egypt's most notorious robbers, who started a long and venerable tradition of converting to Christianity in prison. In the third century, converting to Christianity in prison did not carry with it the cachet of public penance that it does now: it had rather the air of joining a secret society, or falling in with a gang in prison. Much like secret societies, certain churches, still reeling from the effects of recent persecutions, required new members to prove their bona fides by performing acts of daring.
Kirdjun's skills as a thief perfectly qualified him to complete such a trial. After consulting with the other Christian inmates at Alexandria Prefectural Penitentiary, he decided to escape the prison and prove his faith by performing one last heist: stealing the golden headdress from the statue of Sol Invictus in Ptolemy Forum. The escape from the prison happened easily enough, and he spent a day praying and fasting to ensure his success.
He entered the Forum at sunrise, and he tried the most direct route, which was to walk up to it as if he belonged there. He grabbed the headdress and strolled away, miraculously attracting no attention at all. The crown itself became a gift for Dionysos, the Bishop of Alexandria, who wore it to begin a long tradition of golden headgear for men of the Church. Alas, Kirdjun and Dionysos were eventually apprehended, but thanks to their martyrdom, bishops of generations hence would adorn their heads like sun gods of ages past.