No likeness on file

Leo de Rouen

SaintPre-congregation

Born

—

unknown

Died

900

Beatified

—

not needed: before formal processes

Canonised

By tradition

recognised before formal processes began

Who they were

Leo of Rouen was a hieromartyr. His feast day is 1 March.

Summary translated from the Russian Wikipedia article Лев Руанский (CC BY-SA 4.0), until this page is written up in full.

The miracles

Limited information is available on this saint so far.

Why that counted as sanctity

Limited information is available on this saint so far.

Sources

Nominis (French Bishops' Conference) - Saint Leon, eveque et martyr — "Ne a Carentan en Normandie...il fut elu archeveque de Rouen...sa passion missionnaire...le conduisit jusqu'a Bayonne" (+900); matches our died 900.
Wikidata Q4256162 — dates, feast day and identifiers (CC0)

Not yet written up in full. The Catholic source above names this person; the name, dates and step come from Wikidata and are not yet checked against Church records.