Nielsen Hayden genealogy
Descendants of Robert de Beaumont
Abt 1142 - Abt 1207 (~ 65 years)Father: Waleran of Meulan (1104 - 9 Apr 1166 Abbey St. Pierre, Preaux, Eure, Normandy, France)
Mother: Agnes de Montfort ( - 15 Dec 1181)
Robert de Beaumont (Abt 1142 - Abt 1207)
Maud of Cornwall ( - Between 1220 and 1221)(m. Abt 1165)
   └─ Mabel de Meulan ( - Aft 1 May 1204)
    William de Revières (1155 of Carisbrooke, Isle of Wight, England -
    10 Sep 1217 bur.Christ Church, Twynham, Devon, England)
    10 Sep 1217 bur.Christ Church, Twynham, Devon, England)
       ├─ Mary de Revières ( - Aft 12 Nov 1242)
       │ Robert de Courtenay (Abt 1183 of Okehampton, Devon, England - 26 Jul 1242 Iwerne, Dorset, England)
       │ (m. Between 1210 and 1211)
       │ (m. Between 1210 and 1211)
       │    ├─ Hawise de Courtenay (of Okehampton, Devon, England - Bef 8 Apr 1269) =>
       │    │ + John de Neville (of Little Hallingbury, Essex, England -
       │    │ : Bef 8 Jun 1246 bur.Waltham Abbey, Essex, England)(m. Bef 15 Feb 1230)
       │    │ : Bef 8 Jun 1246 bur.Waltham Abbey, Essex, England)(m. Bef 15 Feb 1230)
       │    │ + John de Gatesden (of Broadwater, Sussex, England - Bef 17 Oct 1262)(m. Bef 12 Apr 1254)
       │    └─ John de Courtenay (of Okehampton, Devon, England - 3 May 1274 bur.Ford Abbey, Dorset, England) =>
       │     + Isabel de Vere ( - Bef 7 Jan 1291 bur.Cowick Priory, Exeter, Devon, England)(m. Aft 6 Oct 1240)
       └─ Baldwin de Revières (Aft 28 Apr 1200 - 1 Sep 1216)
        Margaret ( - Bef 29 Sep 1252 bur.Grey Friars, Smithfield, London, England)
           └─ Baldwin de Revières ( - 15 Feb 1245 bur.Breamore Priory, Hampshire, England) =>
            + Amice de Clare (27 May 1220 - Bef 21 Jan 1284)(m. 1226)