Person
Otto IV, Holy Roman Emperor
Holy Roman Emperor
b. 1175 CE – d. 1218 CE
World The Atlantic Lands
Otto IV of Brunswick (1175 – May 19, 1218) is one of two rival kings of the Holy Roman Empire from 1198 on, sole king from 1208 on, and emperor from 1209 on.
The only king of the Welf dynasty, he incurs the wrath of Pope Innocent III and is excommunicated in 1215.
People
Cite this entry
Moran, J. (2025). Otto IV, Holy Roman Emperor. History Atlas. Retrieved 20 September 2026, from https://www.historyatlas.com/people/otto-iv-of-brunswick/
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