Legend of the Purgatory of Saint Patrick

L'Espurgatoire Seint Patriz or The Legend of the Purgatory of Saint Patrick is a 12th-century poem by Marie de France.

It is an Old French translation of a Latin text Tractatus de Purgatorio Sancti Patricii by the monk Henry of Saltrey.

In this work, an Irish knight named Owein travels to St. Patrick's Purgatory to atone for his sins.

After descending into purgatory, he is visited by several demons who show him unholy scenes of torture to try to get him to renounce his religion.

After passing an entire night in the Purgatory, he returns to the church where he began his journey, purged of his sins.