Nielsen Hayden genealogy
Descendants of Rohese de Monmouth
1140 - Abt 1180 (~ 45 years)Father: Baderon de Monmouth (Abt 1100 Monmouth, Monmouthshire, Wales - Between 1170 and 1176)
Mother: Rohese fitz Gilbert ( - Bef 1166)
Rohese de Monmouth (Between 1135 and 1140 - Abt 1180)
Hugh de Lacy (of Meath, Ireland - 25 Jul 1185)(m. Bef 1155)
   ├─ (Unknown) de Lacy
   │ William Fitz Alan (Abt 1154 of Oswestry, Shropshire, England - 1210)(m. Abt 1175)
   │    └─ John Fitz Alan (of Clun, Shropshire, England - Bef 15 Mar 1240)
   │     Isabel d'Aubigny ( - Bef 1240)(m. Bef 1223)
   │        └─ John Fitz Alan (Abt 1223 of Clun, Shropshire, England - Bef 10 Nov 1267) =>
   │         + Maud de Verdun ( - 27 Nov 1283)(m. Bef 1240)
   ├─ Walter de Lacy (Abt 1172 - Bef 24 Feb 1240)
   │ Margaret de Briouze (Abt 1181 - Aft 25 Jun 1245)(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)
   │    │    │ + William de Saint Omer
   │    │    ├─ 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)
   │    │    └─ 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)
   │    ├─ Gille de Lacy (of Dublin, Ireland - 1242)
   │    │ Richard de Burgh (Abt 1193 - 1242)(m. Bef 21 Apr 1225)
   │    │    │ + Gerald de Prendergast (of Enniscorthy in Templeshanbo, Wexford, Ireland - Aug 1251)
   │    │    │ + 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)
   │    │    └─ 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)
   │    │     (m. Abt 1257)
   │    └─ Gilbert de Lacy (of Ewyas Lacy, Herefordshire, England - Between 12 Aug 1230 and 15 Dec 1230)
   │     Isabel le Bigod
   │        │ + 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)
   │         + John de Verdun (Abt 1226 of Alton, Staffordshire, England - Bef 17 Oct 1274)(m. Bef 20 Apr 1242)
   └─ Hugh de Lacy (Abt 1176 -
    Bef 26 Dec 1242 bur.Convent of the Franciscan Friars, Carrickfergus, Antrim, Ireland)
    Bef 26 Dec 1242 bur.Convent of the Franciscan Friars, Carrickfergus, Antrim, Ireland)
    + Emeline de Ridelisford (of Bray, Berkshire, England - Between 18 May 1275 and 19 Jul 1276)
    + Lesceline de Verdun (m. Abt 1195)