Nielsen Hayden genealogy
Family: Heinrich of Saxony / Gertrud von Süpplinburg (F14935)
m. 29 May 1127Henry IX of Bavaria (1074-1126) 
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Wulfhilde of Saxony (1075-1126)
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Matilda of Bavaria ( -1183)  |
| Wulfhild von Bayern ( -1160) |
| Judith of Bavaria (1100-1130) |
| Lothar II von Süpplinburg, Holy Roman Emperor (1075-1137)
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| Richenza von Northeim ( -1141)
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| Heinrich of Saxony (1100-1139)
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| Gertrud von Süpplinburg (1115-1143)
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| Heinrich of Saxony (1129-1195) |