Nielsen Hayden genealogy
Family: Eustace I / Mathilde of Louvain (F1213)
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Male
Eustace I
Birth Abt 995 Death Abt 1049 Burial Marriage Father Baldwin | F6502 Group Sheet Mother Adelvie de Gant | F6502 Group Sheet
Female
Mathilde of Louvain
Birth Abt 993 Death Burial Father Lambert I "The Bearded" | F2498 Group Sheet Mother Gerberga of Lorraine | F2498 Group Sheet
Male
+ Eustache II of Boulogne
Birth Death Abt 1080 Burial Spouse Godgifu of England | F5425 Marriage Spouse (Unknown mistress of Eustache II of Boulogne) | F4657 Marriage Spouse St. Ida of Verdun | F893 Marriage Bef 1054
Male
+ Lambert II of Boulogne
Birth Death 1054 Phalempin, Nord, France 
Burial Spouse Alice of Normandy | F2136 Marriage 1054
Female
+ Gerberge de Boulogne
Birth Death Aft 1059 Burial Spouse Frederick of Luxembourg | F3724 Marriage