No likeness on file

Thethmar

German saint

SaintPremonstratensiansPre-congregation

Feast: 17 May (not on the universal Roman calendar; kept in the Roman Martyrology or local calendars)

Born

—

unknown

Died

1152

Beatified

—

not needed: before formal processes

Canonised

By tradition

recognised before formal processes began

Who they were

Thethmar, also known as Theodemar, was a Premonstratensian canon and missionary. A contemporary and friend of St. Vicelinus, he worked to convert the Wends, a tribe in modern Germany.

Summary from Wikipedia (CC BY-SA 4.0), until this page is written up in full.

The miracles

Limited information available on this saint.

Why that counted as sanctity

Limited information available on this saint.

Sources

Wikidata Q7783574 — dates, feast day and identifiers (CC0)
English Wikipedia — Thethmar (CC BY-SA)

Not yet written up in full: no Church source with an account of this person has been found yet. The name, dates and step come from Wikidata and are not yet checked against Church records.