Lienne de Luçon
Feast: 3 February (not on the universal Roman calendar; kept in the Roman Martyrology or local calendars)
Who they were
Leonio (Latin Leonius; French Lienne) was born in Poitiers to a Christian family. He studied Scripture and theology and was ordained priest by Saint Hilary, the bishop of Poitiers who defended the doctrine of the Trinity against Arianism, and became his disciple and confidant.
He followed Hilary into exile when the emperor Constantius II began persecuting Christians who upheld the Trinity, preaching the Gospel and fighting Arianism through the years abroad. He attended Hilary on his deathbed and himself died in old age at the end of the 4th century. His relics were translated to La-Roche-sur-Yon in 994 but were scattered during the Hundred Years' War. The diocese of Luçon keeps his feast on 3 February, and Poitiers on the 14th of the same month.
The miracles
There was never a formal cause: he has been honoured as a saint since before the Church's formal processes began.
Why that counted as sanctity
Priest of Poitiers and disciple of Saint Hilary; called Lienne in the diocese of Luçon, where his feast is 3 February.
- Santi, beati e testimoni (santiebeati.it) - San Leonio, by Franco Dieghi
- Wikidata Q85853844 — dates, feast day and identifiers (CC0)
Checked against the sources listed on 22 September 2026. Corrections welcome.