The legendary life was written by a monk named Deodatus, who added details according to the standard passiones of the time, mixing factual information with wonderful stories.

Taurinus was born in Rome to Tarquinius, a heathen, and Eustycia (Eusticie, Euticia), a devout Christian.

His legend states that Taurinus faced a demon at Évreux that took three shapes: that of a lion, a bear and a buffalo.

According to Orderic Vitalis in his Historia Ecclesiastica, Taurinus expelled the demon from the local temple of Diana, and when it obeyed his order to break its own idols it was not immediately cast into the Pit, but was instead punished by remaining in the place where it had ruled while seeing the people it had tormented saved.

Two priests of the goddess, Cambise and Zara, had attempted to stop Taurinus from entering the temple, but they were immobilized after the bishop made the sign of the cross.

Taurinus also brought back to life Marinus, the son of the local prefect, who had fallen into a hole and died from the impact.

In 1247, Gislebert de Saint-Martin, abbot of Saint-Taurin, had a reliquary (see gallery) built to house the remaining relics.