Nielsen Hayden genealogy
Descendants of William de la Mare
- Abt 1203Father: Ralph de la Mare ( - Abt 1203)
William de la Mare ( - Abt 1203)
   ├─ Olivia de la Mare
   │ John de Thornhill (Bef 1203 of Thornhill, Dewsbury, Yorkshire, England - Bef 1250)
   │    ├─ Sarah de Thornhill
   │    │ Richard de Tankersley
   │    │    │ + Richard le Tyes (of Burghwallis, Doncaster, Yorkshire, England - Bef 2 Jan 1329)
   │    │     + Hugh de Eland ( - 1309)
   │    └─ Richard de Thornhill (of Thornhill, Dewsbury, Yorkshire, England - 1287)
   │     Maud de Fixby (of Fixby Hall, Huddersfield, Yorkshire, England - ??)
   │        └─ John de Thornhill (of Thornhill, Dewsbury, Yorkshire, England - Bef 9 Jul 1322) =>
   │         + Beatrice Talboner ( - Aft 1334)
   └─ Mabel de la Mare ( - Bef 2 Jul 1253)
    + Geoffrey de Neville (of Danby, Yorkshire, England - Bef 31 Jul 1249)