Nielsen Hayden genealogy
Descendants of Angharad ferch Owain
Father: Owain Gwynedd, King of Gwynedd ( - 1169 bur.Bangor Cathedral, Bangor, Gwynedd, Wales)
Mother: Cristin ferch Gronwy ab Owain ab Edwin (of Tegeingl, Wales - ??)
Angharad ferch Owain
Gryffydd "Maelor" ap Madog, Prince of Northern Powys (of Powys Fadog, Wales -
1191 Castle of Dinas Bran, Nanheudwy, Wales)
1191 Castle of Dinas Bran, Nanheudwy, Wales)
   └─ Madog ap Gruffudd Maelor ap Madog ap Maredudd ap Bleddyn (of Powys Fadog, Wales -
    1236 bur.Valle Crucis Abbey, Llantysilio, Denbighshire, Wales)
    1236 bur.Valle Crucis Abbey, Llantysilio, Denbighshire, Wales)
    Gwladus ferch Ithel ap Rhys ab Ifor ap Hywel ap Morgan Fychan ap Morgan Hir (of Gwent, Wales - ??)
       ├─ Gruffudd ap Madoc (of Bromfield, Lower Powys, Wales -
       │ 1269 bur.Valle Crucis Abbey, Llantysilio, Denbighshire, Wales)
       │ 1269 bur.Valle Crucis Abbey, Llantysilio, Denbighshire, Wales)
       │ Emma de Audley (Abt 1218 of Heleigh in Audley, Staffordshire, England - Aft 22 Dec 1270)
       │    ├─ Margaret ferch Gruffydd ap Madog ( - Aft 1314) =>
       │    │ + John de Arderne (1266 of Aldford, Cheshire, England - Abt 1308)(m. Bef 1299)
       │    └─ Ankaret ferch Gruffudd (Abt 1248 - Aft 22 Jun 1308) =>
       │     + William le Boteler (of Wem, Shropshire, England - Bef 11 Dec 1283)(m. Aft 2 Oct 1261)
       │     + Robert de Neville (of Scotton, Lincolnshire, England - Between 1313 and 1314)(m. Aft 10 Jun 1285)
       └─ Maredudd ap Madog
       
            + Llywelyn ap Gruffudd ap Cadwgan ap Meilir Eutun (Abt 1230 - ??)