Confessio and Epistola in the 1668 Bollandist edition in the Acta Sanctorum by Daniel Papebroch, based on a MS from Arras (BM 450) at a time when the two folios that are missing today were still present: De Sancto Patricio Episcopo Apostolo et Primate Hiberniae. Acta Sanctorum, Martii II (1668), pp. 517-592, Confessio & Epistola pp. 533-544(cf. bibliography):
"Confessio ... Quam ex vetustissimo Nobiliacensis S. Vedasti monasterij codice eruit Andreas Denis, Atrebas, e Societate Iesv."
Cf Bieler I 9 (with fn. 12): "Two leaves of this MS testimony are now missing, but were still in place when a copy was taken from this codex by A. Denis that served as the base text for Papebroch's edition, and thus serving now as a primary source for the missing passages" (in Bieler's apparatus criticus sigla 'v' instead of 'V') "even though it has to be accepted with reserve."
Images created from a copy of the Royal Irish Academy Library by ISOS - Irish Script On Screen, Dublin Institute for Advanced Studies (DIAS).
The full chapter on Saint Patrick (pp. 517-592) as a bookmarked PDF including frontispiece, the text of the Confessio and the Epistola as well as Jocelin's Life of St Patrick [43 MB] [print_papebroch.pdf] .
(An electronic text version available at Acta Sanctorum online.)