Otto of Nordheim
11th-century Bavarian nobleman

Otto of Nordheim (c. 1020 – 11 January 1083) was Duke of Bavaria from 1061 until 1070. He was one of the leaders of the Saxon revolt of 1073–1075 and the Saxon revolt of 1077–1088 against King Henry IV of Germany.
Life
Family
Otto was born about 1020, the son of Count Bernard of Nordheim (d. about 1040) and his wife Eilika. The rich and influential Saxon comital dynasty of Nordheim was first mentioned about 950, its descendance has not been conclusively established: there is possibly a relationship with the Immedinger family of legendary Duke Widukind, while according to the Magdeburg archbishop Eric of Brandenburg, Otto's grandfather Siegfried I of Nordheim was a son of Count Siegfried of Luxembourg.
The Nordheim counts held large Saxon estates on the upper Leine and Werra rivers as well as on the Weser and its Diemel and Nethe tributaries and on the lower Elbe river. They also acted as Vogts (reeves) of the Corvey, Gandersheim, Helmarshausen, Bursfelde, and Amelungsborn. Otto succeeded his father as count of Northeim about 1049, then one of the most influential Saxon nobles along with the Billung duke Bernard II and the Udonid counts of Stade.
Role during the regency of Henry IV
After the death of the Salian emperor Henry III in 1056, his widow, Dowager Empress Agnes, appointed Otto duke of Bavaria in 1061 in order to gain his support as the mother of, and regent for, the young king Henry IV. The following year (1062), however, when Agnes handed power to her confidant Bishop Henry II of Augsburg, Duke Otto was among those princes who assisted Archbishop Anno II of Cologne in seizing control of Henry IV and the regency, in the so-called Coup of Kaiserswerth.
“Otto of Nordheim” enters the record as 11th-century Bavarian nobleman. Crown Archives preserves that source wording while asking what Otto, Nordheim and 11th-century can confirm, complicate or overturn.
Why this record matters
“Otto of Nordheim” is worth following because a concise public description often conceals a longer documentary argument. Here, Otto, Nordheim and 11th-century provides the most credible route into that argument.
Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Jun 8, 2026. The linked authority identifier is Q65006. VIAF identifies the subject as 68671716. The Library of Congress control number is no2005098086. 3 of 3 selected statements include explicit references; 1 carry qualifiers and 0 use preferred rank. The first chronological checks are 1020, 1083, 1061 and 1070.
A concise general-reference account can conceal disagreements about scope, terminology or the weight assigned to individual sources. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.
- Subject orientation
- Search vocabulary
- Locating named sources
The closest primary source, responsible institution and strongest cited specialist reference.
Three-step research path
- Establish the record: confirm the title “Otto of Nordheim”, its source revision and the description used here.
- Expand the search: follow Otto of Nordheim primary sources, Otto of Nordheim archive and Otto research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Otto of Nordheim”?
- Which cited source is closest to the event, object or claim?
- Which institution is responsible for the underlying evidence?
Search terms from this dossier
This entry incorporates text from “Otto of Nordheim” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.