Thethmar, also known as Theodemar, was a

Premonstratensian The Order of Canons Regular of Prémontré (), also known as the Premonstratensians, the Norbertines and, in Britain and Ireland, as the White Canons (from the colour of their habit), is a religious order of canons regular in the Catholic Chur ...

canon and

missionary A missionary is a member of a Religious denomination, religious group who is sent into an area in order to promote its faith or provide services to people, such as education, literacy, social justice, health care, and economic development.Thoma ...

. A contemporary and friend of St. Vicelinus, he worked to convert the

Wends Wends is a historical name for Slavs who inhabited present-day northeast Germany. It refers not to a homogeneous people, but to various people, tribes or groups depending on where and when it was used. In the modern day, communities identifying ...

, a tribe in modern

Germany Germany, officially the Federal Republic of Germany, is a country in Central Europe. It lies between the Baltic Sea and the North Sea to the north and the Alps to the south. Its sixteen States of Germany, constituent states have a total popu ...

.St. Thethmar
Catholic Online

Notes

German Roman Catholic saints 12th-century Christian saints 1152 deaths Premonstratensians Year of birth unknown {{Germany-saint-stub