Nielsen Hayden genealogy
Descendants of Thomas de St. Valéry
- 1219Father: Bernard de St. Valéry (of Hinton Waldrist, Berkshire, England - 1190)
Mother: Eleanor de Domnart
Thomas de St. Valéry ( - 1219)
   └─ Alianor de St. Valéry (1192 - Aft 15 Sep 1250)
    Robert III "Gasteblé" of Dreux (1185 - 3 Mar 1234)(m. 1210)
       ├─ Yolande of Dreux (Abt 1212 - 30 Oct 1248)
       │ Hugh IV of Burgundy (9 Mar 1212 - 27 Oct 1272)(m. 1229)
       │    ├─ Eudes of Burgundy (1230 - 4 Aug 1266 Acre, Palestine) =>
       │    │ + Mahaut II de Dampierre (Between 1234 and 1235 - 1262)(m. Feb 1248)
       │    │ + Agnès de Dampierre (1237 - 7 Sep 1288)(m. Feb 1248)
       │    ├─ Alix of Burgundy (Abt 1233 -
       │    │ 23 Oct 1273 bur.Church of the Dominicans, Leuven, Vlaams-Brabant, Belgium) =>
       │    │ 23 Oct 1273 bur.Church of the Dominicans, Leuven, Vlaams-Brabant, Belgium) =>
       │    │ + Henri III of Brabant (Abt 1230 - 28 Feb 1261 Leuven, Vlaams-Brabant, Belgium)(m. 1251)
       │    └─ Robert II of Burgundy (Abt 1248 - 21 Mar 1306 Vernon-sur-Seine, Eure, Normandy, France) =>
       │     + Agnes of France (Abt 1260 - 19 Dec 1325 Château de Lantenay, Côte-d'Or, Burgundy, France)
       │     (m. 1279)
       │     (m. 1279)
       └─ Robert I de Dreux (Abt 1217 - 1264)
        Isabeau de Villebéon ( - Bef 1282)
            + Gaucher V de Châtillon (Abt 1249 - 1329)(m. 1276)