Nielsen Hayden genealogy
Descendants of William fitz Thomas
- Bef 1295Father: Thomas fitz William (Between 1195 and 1200 of Sprotborough, Yorkshire, England - Bef 17 Oct 1264)
Mother: Agnes Bertram ( - Aft 1266)
William fitz Thomas (of Sprotborough, Yorkshire, England - Bef 1295)
   └─ William fitz William (of Sprotborough, Yorkshire, England -
    Between 4 Mar 1339 and 1342 bur.Sprotborough, Yorkshire, England)
    Between 4 Mar 1339 and 1342 bur.Sprotborough, Yorkshire, England)
    Isabel Deincourt ( - Aft 26 Jul 1348 bur.Sprotborough, Yorkshire, England)
       ├─ John Fitzwilliam (of Sprotborough, Yorkshire, England - 10 Aug 1349)
       │ Joan Reresby
       │    └─ John Fitzwilliam (Abt Feb 1328 of Sprotborough, Yorkshire, England -
       │     Bef 19 Feb 1385 Howden, Yorkshire, England) =>
       │     Bef 19 Feb 1385 Howden, Yorkshire, England) =>
       │     + Elizabeth de Clinton ( - Aft 1399)
       └─ Agnes Fitzwilliam
        Adam de Newmarch (of Womersley, Yorkshire, England - Between 1344 and 1352)
           └─ Robert de Newmarch (Abt 1344 of Womersley, Yorkshire, England - ??) =>
            + Emma