Patrick is unique among early saints because he left two authentic writings; The Confessio, a personal account of his life and mission and The Letter to the Soldiers of Coroticus, condemning violence against his converts.
Everything else comes from later tradition.
The Confessio
The Confessio is not a full biography. It is a defense of Patrick’s mission written late in his life. Patrick explains his capture, his spiritual growth, his calling to return to Ireland, and his work among the Irish.
He repeatedly emphasizes his lack of education and rough Latin, responding to critics who questioned his authority. The text is filled with quotations from the Bible, especially the Psalms and the letters of Saint Paul.
The value of the Confessio lies not in precise dates or locations, but in its insight into Patrick’s mindset and the realities of missionary life in fifth-century Ireland.
The Letter to the Soldiers of Coroticus
This letter was written after a brutal raid in which British Christian soldiers killed and enslaved newly baptized Irish converts. Patrick angrily denounced the attackers and declared them cut off from the Christian community.
The letter shows Patrick’s fierce loyalty to his Irish converts. He insists they are true Christians, equal to believers anywhere, and condemns the idea that they could be treated as property.
Later Writings and False Attributions
Later biographies by Muirchú and Tírechán added speeches, miracles, and dramatic confrontations. These works shaped Patrick’s legend but are not eyewitness accounts.
Several prayers were later attributed to Patrick, most famously St. Patrick’s Breastplate (the Lorica). Linguistic evidence shows it was written in Old Irish centuries after Patrick’s death. It is an important Irish prayer, but not Patrick’s work.