Nielsen Hayden genealogy
Descendants of Matilda
- Abt 1151
Matilda
( - Abt 1151)
Bernard de St. Valéry (of Hinton Waldrist, Berkshire, England - 1190)
   └─ Maud de St. Valéry (Abt 1150 - 1210 Windsor, Berkshire, England)
    William de Briouze (of Briouze, Normandy, France - 9 Aug 1211 Corbeil, near Paris, France)
       ├─ William de Briouze ( - 1210 Windsor, Berkshire, England)
       │ Maud de Clare ( - 1213)(m. Bef 1198)
       │    │ + Henry de Tracy (of Barnstaple, Devon, England - Bef 21 Aug 1274)(m. Bef May 1220)
       │    └─ John de Brewes (Abt 1197 of Gower, Swansea, Wales - Between 1231 and 1232) =>
       │     + Margaret ferch Llywelyn ( - 1265)(m. 1219)
       ├─ Reynold de Briouze (of Abergavenny, Monmouthshire, Wales - Between 1227 and 1228)
       │ Grace Briwerre ( - Bef 1215)
       │ :   └─ William de Briouze (of Abergavenny, Monmouthshire, Wales - 2 May 1230) =>
       │ :    + Eve Marshal ( - Between Jan 1242 and 1246)
       │ + Gwladus Ddu ( - 1251 Windsor, Berkshire, England)(m. 1215)
       ├─ Bertha de Briouze
       │ William de Beauchamp (of Elmley Castle, Worcestershire, England - 1197 Normandy, France)
       │    ├─ Andrew de Beauchamp (of Thenford, Northamptonshire, England - Aft 1213) =>
       │    │ + Eve de Grey (of Standlake, Oxfordshire, England - 1242)(m. Bef 1198)
       │    └─ Walter de Beauchamp (of Elmley and Salwarpe, Worcestershire, England - 1236) =>
       │     + Ankaret ( - Bef 1286)
       │     + Joan de Mortimer ( - 1225)(m. Abt 10 Jul 1214)
       ├─ Matilda de Briouze ( - 29 Dec 1210 Llanbardarn Fawr, Ceredigion, Wales)
       │ Gruffudd ab Yr Arglwydd Rhys ( - 25 Jul 1201 Strata Florida Abbey, Ceredigion, Wales)
       │    └─ Owain ap Gruffudd ab Yr Arglwydd Rhys ( - 18 Jan 1236 Strata Florida Abbey, Ceredigion, Wales) =>
       │     + (Unknown daughter of Gwion Sais)
       └─ Margaret de Briouze (Abt 1181 - Aft 25 Jun 1245)
        Walter de Lacy (Abt 1172 - Bef 24 Feb 1240)(m. Bef 19 Nov 1200)
           │ + Ralph VI de Tony (Abt 1189 of Flamstead, Hertfordshire, England - Abt 29 Sep 1239 At sea)
           │ (m. Between 1232 and 1233)
           │ (m. Between 1232 and 1233)
           │ + Richard de Burgh (Abt 1193 - 1242)(m. Bef 21 Apr 1225)
           └─ Gilbert de Lacy (of Ewyas Lacy, Herefordshire, England - Between 12 Aug 1230 and 15 Dec 1230) =>
            + Isabel le Bigod