Nielsen Hayden genealogy
Descendants of James Byron
- Abt 1352Father: Richard Byron (of Clayton, Lancashire, England - Abt 1347)
Mother: Agnes
James Byron (of Clayton, Lancashire, England - Abt 1352)
   └─ Richard de Byron (of Clayton, Lancashire, England - 27 Jun 1397)
    Joan Colewick (of Colewick, Nottinghamshire, England - 8 Oct 1426)(m. Bef 1387)
       └─ John Byron (1387 of Clayton, Lancashire, England - Abt 1450)
        Margaret Booth (of Barton, Lancashire, England - Abt 1460)
           ├─ Margaret Byron ( - 25 May 1486 bur.Stanton Harcourt, Oxfordshire, England) =>
           │ + William Atherton (of Atherton, Lancashire, England - 1440)
           │ + Robert Harcourt (20 Sep 1410 Ellenhall, Staffordshire, England -
           │ 14 Nov 1470 bur.Stanton Harcourt, Oxfordshire, England)(m. Bef 1441)
           │ 14 Nov 1470 bur.Stanton Harcourt, Oxfordshire, England)(m. Bef 1441)
            + Thomas Assheton (Abt 1403 of Ashton-under-Lyne, Lancashire, England - Aft 9 Mar 1446)(m. 1415)