Nielsen Hayden genealogy
Family: Wilhelm IV von Jülich / Margareta van Gelre (F14769)
m. 12 Mar 1237
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Male
Wilhelm IV von Jülich
Birth 1210 Death 16 Mar 1278 Aachen, Westphalia, Germany 
Burial Marriage 12 Mar 1237 [1] Other Spouse Richardis van Gelre | F14539 Marriage Bef 10 Jan 1250 Father Wilhelm III von Jülich | F14540 Group Sheet Mother Mathilde von Limburg | F14540 Group Sheet
Female
Margareta van Gelre
Birth Death Bef 10 Jan 1250 Burial Father Gerhard van Gelre | F14552 Group Sheet Mother Margareta of Brabant | F14552 Group Sheet
Female
+ Katharina von Jülich
Birth Death Burial Spouse Johann von Arberg | F14770 Marriage Between 1268 and 1270
Female
Mathilde von Jülich
Birth Abt 1240 Death Bef 1279 Burial Spouse Johann I von Looz | F27333 Marriage Abt 1258
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Sources - [S49] Genealogics by Leo Van de Pas, continued by Ian Fettes and Leslie Mahler.
- [S49] Genealogics by Leo Van de Pas, continued by Ian Fettes and Leslie Mahler.