Nielsen Hayden genealogy
Ancestors of William de Montagu
1303 - 1344 (~ 42 years) ┌── William de Montagu (Abt 1213 of Shepton Montague, Somerset, England - Bef 23 Sep 1270) =>
┌── Simon de Montagu (Aft 1250 - 26 Sep 1316 bur.Bruton Priory, Somerset, England)(m. Aft 24 Oct 1270)
│ └── Bertha ( - Aft 1259)
│
┌── William de Montagu (Abt 1285 of Shepton Montague, Somerset, England - 18 Oct 1319 Gascony, France)
│ (m. Aft 20 Jun 1292)
│ │
│ │ ┌── Amauri de St. Amand (Abt 1213 of Cainhoe, Bedfordshire, England - Bef 13 Nov 1285) =>
│ └── Hawise de St. Amand ( - 1287)(m. Aft 24 Oct 1270)
│ └── Isabel
│
William de Montagu (Between 1302 and 1303 of Shepton Montague, Somerset, England - 30 Jan 1344)
│
│ ┌── Peter de Montfort (Abt 1205 - 4 Aug 1265 Evesham, Worcestershire, England)(m. Bef 1229) =>
│ ┌── Peter de Montfort (Abt 1240 of Beaudesert, Warwickshire, England - Bef 4 Mar 1286)(m. Abt 1260)
│ │ └── Alice de Audley ( - Aft Aug 1265)(m. Bef 1229) =>
│ │
└── 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)
(now Christ Church), Oxford, Oxfordshire, England)(m. Aft 20 Jun 1292)
│
│ ┌── Henry de la Mare (Abt 1208 of Ashtead, Epsom, Surrey, England - 1257) =>
└── Maud de la Mare (Abt 1242 - ??)(m. Abt 1260)
└── Joan de Neville ( - Bef 1280) =>