Nielsen Hayden genealogy
Descendants of Margaret de Briouze
Abt 1181 - Aft 1245 (~ 64 years)Father: William de Briouze (of Briouze, Normandy, France - 9 Aug 1211 Corbeil, near Paris, France)
Mother: Maud de St. Valéry (Abt 1150 - 1210 Windsor, Berkshire, England)
Margaret de Briouze (Abt 1181 - Aft 25 Jun 1245)
Walter de Lacy (Abt 1172 - Bef 24 Feb 1240)(m. Bef 19 Nov 1200)
   ├─ Pernel de Lacy ( - Aft 25 Nov 1288)
   │ 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)
   │    ├─ Margaret de Tony
   │    │ William de Saint Omer
   │    │    └─ Thomas de Saint Omer (of Mulbarton, Norfolk, England - Between 1316 and 1319) =>
   │    │     + Alice ( - Aft 1331)
   │    ├─ Constance de Toeni (Between Jul 1233 and Jan 1237 - 11 Feb 1266)
   │    │ Fulk IV Fitzwarine (Abt 1208 of Whittington, Oswestry, Shropshire, England -
   │    │ 14 May 1264 River Ouse, Sussex, England)(m. Aft 1238)
   │    │ 14 May 1264 River Ouse, Sussex, England)(m. Aft 1238)
   │    │    └─ Fulk V Fitzwarine (14 Sep 1251 Whittington, Oswestry, Shropshire, England - 24 Nov 1315) =>
   │    │     + Margaret de la Pole ( - 11 May 1336)(m. Bef 25 Feb 1277)
   │    └─ Roger V de Tony (Abt 29 Sep 1235 of Flamstead, Hertfordshire, England - Bef 12 May 1264)
   │     Alice de Bohun ( - Aft 1255)(m. 30 Jun 1239)
   │        │ + Walter de Beauchamp (of Alcester, Warwickshire, England -
   │        │ 16 Feb 1303 Chalfont, Buckinghamshire, England)(m. Abt 1269)
   │        │ 16 Feb 1303 Chalfont, Buckinghamshire, England)(m. Abt 1269)
   │        └─ Ralph VII de Tony (Abt 1255 of Flamstead, Hertfordshire, England - 27 May 1295 Gascony, France) =>
   │         + Mary ( - Aft 1283)(m. Bef 1276)
   ├─ Gille de Lacy (of Dublin, Ireland - 1242)
   │ Richard de Burgh (Abt 1193 - 1242)(m. Bef 21 Apr 1225)
   │    ├─ (Unknown) de Burgh
   │    │ Gerald de Prendergast (of Enniscorthy in Templeshanbo, Wexford, Ireland - Aug 1251)
   │    │     + Maurice fitz Maurice (Abt 1238 - Bef 2 Sep 1277)(m. Bef 28 Oct 1259)
   │    ├─ Margery de Burgh ( - Aft 1 Mar 1253)
   │    │ Thebaud le Boteler (Abt 1223 of Arklow, Wicklow, Ireland -
   │    │ Bef 3 Aug 1248 bur.Arklow Abbey, Wicklow, Ireland)(m. Bef 1243)
   │    │ Bef 3 Aug 1248 bur.Arklow Abbey, Wicklow, Ireland)(m. Bef 1243)
   │    │    └─ Thebaud le Boteler (Abt 1242 - 26 Sep 1285 Arklow, Wicklow, Ireland) =>
   │    │     + Joan fitz John ( - Between 25 Feb 1303 and 26 May 1303)(m. Bef 1269)
   │    └─ Walter de Burgh (Abt 1229 - 28 Jul 1271 Galway Castle, Galway, Ireland)
   │     Avelina fitz John ( - Abt 20 May 1274 bur.Dunmow Priory, Little Dunmow, Essex, England)(m. Abt 1257)
   │        │ + James Stewart (Abt 1243 - 16 Jul 1309)
   │        └─ Richard de Burgh (Abt 1259 - 29 Jul 1326 Monastery at Athassel-on-the-Suir, Tipperary, Ireland) =>
   │         + Margaret ( - 1304)(m. Bef 27 Feb 1281)
   └─ Gilbert de Lacy (of Ewyas Lacy, Herefordshire, England - Between 12 Aug 1230 and 15 Dec 1230)
    Isabel le Bigod
       ├─ Maud de Lacy ( - 11 Apr 1303)
       │ Geoffrey de Geneville (Aft 1225 - 21 Oct 1314 House of the Friars Preachers, Trim, Meath, Ireland)
       │ (m. 4 Aug 1252 Woodstock, Oxfordshire, England)
       │ (m. 4 Aug 1252 Woodstock, Oxfordshire, England)
       │    └─ Peter de Geneville (of Ludlow, Shropshire, England - Bef 8 Jun 1292) =>
       │     + Joan de la Marche ( - Bef 18 Apr 1323 bur.Abbey of Valence, Vienne, Poitou-Charentes, France)
       │     (m. Bef 11 Oct 1283)
       │     (m. Bef 11 Oct 1283)
       └─ Margaret de Lacy ( - 1256)
        John de Verdun (Abt 1226 of Alton, Staffordshire, England - Bef 17 Oct 1274)(m. Bef 20 Apr 1242)
           └─ Thebaud de Verdun (Abt 1248 of Alton, Staffordshire, England -
            24 Aug 1309 Alton, Staffordshire, England) =>
            24 Aug 1309 Alton, Staffordshire, England) =>
            + Margery de Bohun ( - Between 1280 and 1304)(m. Bef 6 Nov 1276)