ðɪ ˈoʊnli sˈoːɹs ɪz ɐn ˈoʊld "vˈiːɾə ˈɛs. mˈæɡni", wˌɪtʃ haʊˈɛvɚ kəntˈeɪnz sˌoʊ mˈɛni ˈɑːbviəs ænˈækɹənˌɪzəmz ðæt lˈɪɾəl ɹᵻlˈaɪəns kæn biː plˈeɪst ˈɔn ɪt.
The only source is an old "Vita S. Magni", which however contains so many obvious anachronisms that little reliance can be placed on it.