Nielsen Hayden genealogy
Descendants of Roger de Thornton
- Bef 1205Father: Ralph fitz Roger (of Thornton Steward, Yorkshire, England - Bef Oct 1195)
Roger de Thornton ( - Bef 1205)
   └─ Wimar de Thornton (of Wicken, Cambridgeshire, England - Bef 1243)
    Joan ( - Aft 1249)
       └─ Maud de Thornton
        Edmund de Kemesek ( - 1253)
           └─ Edmund de Kemesek (Abt 1247 of Farnham, Cambridgeshire, England - 29 Apr 1288) =>
            + Petronilla de Polstead (Abt 1247 - Aft 23 May 1308)