Nielsen Hayden genealogy
Descendants of Drew de Montagu
- Bef 1217Father: William de Montagu ( - Abt Jun 1217)
Mother: Isabel ( - Aft Jun 1217)
Drew de Montagu ( - Bef 1217)
   └─ William de Montagu (Abt 1213 of Shepton Montague, Somerset, England - Bef 23 Sep 1270)
    Bertha ( - Aft 1259)
       └─ Simon de Montagu (Aft 1250 - 26 Sep 1316 bur.Bruton Priory, Somerset, England)
        Isabel
        :    + Robert de Brent ( - Abt 1308)
        Hawise de St. Amand ( - 1287)(m. Aft 24 Oct 1270)
           │ + Henry le Tyeys (of Hardwell, Berkshire, England - Bef 8 Oct 1307)(m. Bef 1285)
           └─ William de Montagu (Abt 1285 of Shepton Montague, Somerset, England -
            18 Oct 1319 Gascony, France) =>
            18 Oct 1319 Gascony, France) =>
            + Elizabeth de Montfort (of Beaudesert, Warwickshire, England - 16 Aug 1354 bur.Priory of St.
            Frideswide (now Christ Church), Oxford, Oxfordshire, England)(m. Aft 20 Jun 1292)
            Frideswide (now Christ Church), Oxford, Oxfordshire, England)(m. Aft 20 Jun 1292)