The Udonids (Udonen) were a German noble family, ruling as both the Counts of Stade and Margraves of the Nordmark, or Northern March, from the 9th to the 12th century. The first formal member of this family was Henry I the Bald, who took his seat in Harsefeld, part of the Duchy of Franconia, where he built a castle in 965. He was the grandson of the first Count of Stade, Lothar I, who was killed by the Great Heathen Army in the Battle of Ebstorf, and was recognized as one of the Martyrs of Ebsdorf by the Catholic Church.
The Udonids (Udonen) were a German noble family, ruling as both the Counts of Stade and Margraves of the Nordmark, or Northern March, from the 9th to the 12th century. The first formal member of this family was Henry I the Bald, who took his seat in Harsefeld, part of the Duchy of Franconia, where he built a castle in 965. He was the grandson of the first Count of Stade, Lothar I, who was killed by the Great Heathen Army in the Battle of Ebstorf, and was recognized as one of the Martyrs of Ebsdorf by the Catholic Church.
Henry's grandson Lothair Udo I became Margrave of Nordmark in 1056. Because of the Slav uprising of 983, the Northern March in 1056 was limited to today's Altmark, west of the Middle Elbe. Due to Lothair Udo I's position as margrave, the County of Stade on the Lower Elbe was referred to in documents as (the County of Margrave Udo).
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).