Nielsen Hayden genealogy
Descendants of Thomas Basset
- Bef 1220Father: Thomas Basset (of Headington, Oxfordshire, England - Abt 1182)
Mother: Alice de Dunstanville (of Shiplake, Oxfordshire, England - Aft 1181)
Thomas Basset (of Headington, Oxfordshire, England - Bef 1 May 1220)
   └─ Alice Basset ( - Abt 1263)
    + William II Malet (Bef 1174 of Curry Mallet, Langport, Somerset, England - Abt 1216)
    John Biset (of Kidderminster, Worcestershire, England - 1241 bur.Maiden Bradley Priory, Wiltshire, England)
    (m. Bef 1223)
    (m. Bef 1223)
       ├─ Isabel Biset ( - Bef Jan 1279 bur.Hook Norton Church, Oxfordshire, England)
       │ Hugh de Plessis (Between 1237 and 1239 of Hook Norton, Oxfordshire, England - Bef 7 Jul 1292)
       │ (m. Bef Oct 1249)
       │ (m. Bef Oct 1249)
       │    │ + John Gernon (of East Lavington, Wiltshire, England - ??)
       │     + William de Bereford ( - Bef 20 Aug 1326)
       └─ Margery Biset ( - Bef 31 Dec 1256)
        Richard de Rivers ( - Bef 25 Apr 1243)(m. Bef 2 Nov 1241)
            + Maud de Creye (m. Bef 1268)