Nielsen Hayden genealogy
Family: Hermann / Jutta of Thuringia (F14818)
Otto I von Calvelage (1100-1170) 
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| Ludwig II of Thuringia (1128-1172)
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Jutta of Swabia (1133-1191)
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Hermann I of Thuringia (1154-1217)  |
| Friedrich of Thuringia (1156-1229) |
| Hermann (1150-1221)
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| Ludwig (1200-1249) |