county · Germany and Central Europe
County of Kyburg
Origins
The castle of Kyburg near Winterthur belonged to the counts of Winterthur in the early 11th century; in 1027 it was besieged by Emperor Conrad II during the revolt of Duke Ernest II of Swabia. Around 1080 it passed to the counts of Dillingen, whose branch took the name Kyburg in the 12th century.
Rule and society
The Kyburgs inherited part of the lands of the Zähringen dukes in 1218, gaining Burgdorf, Thun and Fribourg, which made them one of the largest landholders in the Swiss plateau. They founded towns such as Winterthur, Diessenhofen and Frauenfeld and governed through castles and stewards.
Decline and legacy
Hartmann IV and his nephew Hartmann V died without male heirs in 1263 and 1264. Rudolf of Habsburg, Hartmann IV's nephew, seized the inheritance, nearly doubling the County of Habsburg's lands. Kyburg castle later belonged to Zurich from 1424.
Lineage
On the connections map
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- County of Kyburg was part of Holy Roman Empire1027 CE – 1264 CE
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Cite this page
- APA
- The Epoch Institute. (2026). County of Kyburg. In The Epoch Institute States Register. https://the-epoch-institute.org/state/county-of-kyburg
- MLA
- “County of Kyburg.” The Epoch Institute States Register, The Epoch Institute, 2026, https://the-epoch-institute.org/state/county-of-kyburg. Accessed .
- Chicago
- The Epoch Institute. “County of Kyburg.” The Epoch Institute States Register. 2026. https://the-epoch-institute.org/state/county-of-kyburg.
- Harvard
- The Epoch Institute (2026) ‘County of Kyburg’, The Epoch Institute States Register. Available at: https://the-epoch-institute.org/state/county-of-kyburg (Accessed: ).
Last reviewed October 2026Random state ↻