Nielsen Hayden genealogy
Jean II de Roucy
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Name Jean II de Roucy Gender Male Death 1251 Flanders
[1, 2] Person ID I37403 Ancestry of PNH, TNH, and others | Ancestor of GR, Ancestor of KL Last Modified 12 Jun 2026
Father Robert I de Pierrepont d. Abt 1209 Mother Eustachie de Roucy d. Abt 1211 Family ID F27154 Group Sheet | Family Chart
Family 
Marie de Dammartin Marriage Bef 15 Dec 1241 [1, 2] Children + 1. Marie de Roucy + 2. Jean III de Roucy d. 1282 Family ID F22011 Group Sheet | Family Chart Last Modified 12 Jun 2026
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Notes - Count of Roucy. Viscount of Mareuil. Seigneur of Pierrepont and Sissone. Died in battle.
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Sources - [S6193] John P. DuLong and Jean Bunot, "Catherine de Baillon's de Roye Ancestry: Another Royal Gateway." Michigan's Habitant Heritage 30:5, Jan 2009.
- [S49] Genealogics by Leo Van de Pas, continued by Ian Fettes and Leslie Mahler.
- [S6193] John P. DuLong and Jean Bunot, "Catherine de Baillon's de Roye Ancestry: Another Royal Gateway." Michigan's Habitant Heritage 30:5, Jan 2009.