Nielsen Hayden genealogy
Descendants of Mahaut of Clermont
- 1200Father: Renaud II de Clermont (of Clermont, Oise, Picardie, France - Bef 1162)
Mother: Clemence de Bar-le-Duc (of Bar-le-Duc, Meuse, Argonne, Lorraine, France - Aft 1185)
Mahaut of Clermont ( - Oct 1200)
Aubrey II de Dammartin (Abt 1130 - 19 Sep 1200 London, England)
   ├─ Juliane de Dammartin ( - 1238)
   │ Hugh de Gournay (of Wendover, Buckinghamshire, England - 25 Oct 1214 Rouen, Seine-Maritime, Normandy, France)
   │ (m. Bef 1193)
   │ (m. Bef 1193)
   │    ├─ Milicent de Gournay ( - Bef 1233)
   │    │ William II de Cantelowe (of Calne, Wiltshire, England - 22 Feb 1251)(m. Bef Jul 1215)
   │    │    ├─ William III de Cantelowe (of Calne, Wiltshire, England -
   │    │    │ 25 Sep 1254 Calstone, Wiltshire, England) =>
   │    │    │ 25 Sep 1254 Calstone, Wiltshire, England) =>
   │    │    │ + Eve de Briouze ( - Between 20 Jul 1255 and 28 Jul 1255)(m. Bef 1241)
   │    │    │ + Robert de Tregoz (of Ewyas Harold, Herefordshire, England - Bef 24 Sep 1268)(m. Bef 1 Aug 1245)
   │    │    │ + Robert de St. John (of Basing, Hampshire, England - Bef 25 Mar 1267)
   │    │    │ + Geoffrey de Lucy (of Newington, Kent, England - Bef 16 Aug 1252)(m. Bef 3 Dec 1235)
   │    │    ├─ John de Cantelowe (of Bearley, Warwickshire, England - Aft 1278) =>
   │    │    │ + Margery Comyn (Bef 1224 - Aft 1278)(m. Between 1227 and 1236)
   │    │    └─ St. Thomas de Cantelowe (Abt 1218 Hambleden, Buckinghamshire, England -
   │    │     25 Aug 1282 Ferento, Montefiascone, Italy)
   │    │     25 Aug 1282 Ferento, Montefiascone, Italy)
   │    └─ Hugh de Gournay (of Mapledurham, Oxfordshire, England - 1238 bur.Langley Abbey, Norfolk, England)
   │     Maud ( - Bef 1273)
   │        └─ Juliane de Gournay (Abt 1237 of Mapledurham, Oxfordshire, England - Bef 6 Nov 1295) =>
   │         + William Bardolf (of Wormegay, Norfolk, England - 1 Dec 1289)(m. Bef 1254)
   ├─ Simon II de Dammartin ( - 21 Sep 1239 bur.Abbey de Valloires, Abbeville, Somme, Picardy, France)
   │ Marie of Ponthieu (Bef 17 Apr 1199 - Sep 1250 Abbeville, Somme, Picardy, France)(m. Sep 1208)
   │    ├─ Philippa de Dammartin ( - Between 14 Apr 1277 and 1281)
   │    │ Otto II van Gelre (Abt 1215 - 10 Jan 1271)(m. 1253)
   │    │    ├─ Margareta van Gelre ( - Between 1282 and 1287) =>
   │    │    │ + Dietrich VIII von Kleve (Between 1256 and 1257 - 4 Oct 1305)
   │    │    └─ Reinald I of Guelders (Abt 1255 - 9 Oct 1326) =>
   │    │     + Marguerite van Vlaanderen ( - Abt 1328)(m. 3 Jul 1286 Namur, Wallonia, Belgium)
   │    ├─ Marie de Dammartin
   │    │ Jean II de Roucy ( - 1251 Flanders)(m. Bef 15 Dec 1241)
   │    │     + Jean I de Garlande
   │    └─ Jeanne de Dammartin (Abt 1220 - 15 Mar 1279 Abbeville, Somme, Picardy, France)
   │     St. Fernando III, King Of Castile, León, Galicia, Toledo, Córdoba, Jaén, and Seville (Between Jun 1201
   │     and Jul 1201 En route between Salamanca and Zamora -
   │     30 May 1252 Seville, Andalusia, Spain)(m. Bef 31 Oct 1237 Burgos, Castile, Spain)
   │     and Jul 1201 En route between Salamanca and Zamora -
   │     30 May 1252 Seville, Andalusia, Spain)(m. Bef 31 Oct 1237 Burgos, Castile, Spain)
   │        └─ Eleanor of Castile, Queen Consort of England (1240 - 28 Nov 1290 Hardby, Nottinghamshire,
   │         England) =>
   │         England) =>
   │         + Edward I, King of England (17 Jun 1239 Westminster Palace, Westminster, Middlesex, England - 7 Jul
   │         1307 Burgh-by-Sands, Carlisle, Cumberland, England)(m. 18 Oct 1254 Abbey of Santa María la Real
   │         de Las Huelgas, Burgos, Castile, Spain)
   │         1307 Burgh-by-Sands, Carlisle, Cumberland, England)(m. 18 Oct 1254 Abbey of Santa María la Real
   │         de Las Huelgas, Burgos, Castile, Spain)
   └─ Agnès de Dammartin ( - Aft 1244)
    Guillaume de Fiennes ( - Bef Jul 1240)(m. Bef 1 Jan 1204)
       └─ Enguerrand de Fiennes (Bef 1205 - 1269)
        (Unknown) de Condé
        :   ├─ Guillaume de Fiennes (of Wendover, Buckinghamshire, England - 11 Jul 1302 Kortrijk, Flanders) =>
        :   │ + Blanche de Brienne (m. Between 18 Jan 1266 and Feb 1267)
        :   └─ Giles de Fiennes (of Old Court in Wartling, Sussex, England - Aft 1314) =>
        :    + Sibyl Filliol ( - Aft 1320)(m. Bef 19 Feb 1270)
        Isabel ( - 9 Sep 1296)(m. Bef 1257)
           └─ Maud de Fiennes ( - Bef 31 Dec 1298 bur.Walden Abbey, Essex, England) =>
            + Humphrey de Bohun (Abt Sep 1248 - 31 Dec 1298 Pleshey, Essex, England)(m. Bef 20 Jul 1275)