Nielsen Hayden genealogy
Family: Berengario, Holy Roman Emperor / Bertila (F1390)
m. Abt 880-890St. Eberhard ( -865) 
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Gisela of Aquitaine (819-874)
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Heilwig of Friuli (855-895)  |
| Suppo ( -882) |
| Berengario, Holy Roman Emperor (840-924)
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| Bertila ( -910)
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| Gisela of Italy ( -910) |