Hermann II of Thuringia
landgrave of Thuringia

Hermann II (28 March 1222 in Creuzburg – 3 January 1241) was the Landgrave of Thuringia and the son of Louis IV, Landgrave of Thuringia, and Saint Elizabeth of Hungary.
Life
With Louis's death in 1227, his brother Henry Raspe assumed the regency due to the minority of four-year-old Hermann. Henry managed to officially succeed his brother after the death of Elizabeth in 1231. Hermann never reigned and died ten years later; some historians have accused Henry of poisoning the youth. He was married to Helen, daughter of Otto I, Duke of Brunswick-Lüneburg.
References
Bibliography
Klaniczay, Gábor (2002). Holy Rulers and Blessed Princesses: Dynastic Cults in Medieval Central Europe. Translated by Palmai, Eva. Cambridge University Press.
Mägdefrau, Werner (2010).
Begin with the source’s own compact description: “Hermann II of Thuringia” is landgrave of Thuringia. The dossier treats that line as a proposition to test through Hermann, Thuringia and landgrave, not as a finished interpretation.
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Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Aug 23, 2026. The linked authority identifier is Q68575. VIAF identifies the subject as 86108883. 2 of 2 selected statements include explicit references; 1 carry qualifiers and 0 use preferred rank. The first chronological checks are 1222, 1241, 1227 and 1231.
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