Nielsen Hayden genealogy
Family: Christoffer I, King of Denmark / Margarete Tczewsko-Lubiszewska (F15176)
m. 1248Valdemar II Sejr, King of Denmark (1170-1241) 
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Berengaria (1194-1221)
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Erik IV-VI, King of Denmark (1216-1250)  |
| Sophie of Denmark (1217-1247) |
| Abel, King of Denmark (1218-1252) |
| Sambor II of Eastern Pomerania (1206-1278)
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| Mechtild von Mecklenburg ( -1270)
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| Christoffer I, King of Denmark (1219-1259)
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| Margarete Tczewsko-Lubiszewska (1230-1282)
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| Eric V Klipping, King of Denmark (1249-1286) |