Nielsen Hayden genealogy
Descendants of Owain Gwynedd, King of Gwynedd
- 1169Father: Gruffydd ap Cynan ab Iago, King of Gwynedd (Abt 1055 - 1137)
Mother: Angharad ferch Owain ( - 1162)
Owain Gwynedd, King of Gwynedd ( - 1169 bur.Bangor Cathedral, Bangor, Gwynedd, Wales)
:   ├─ Iorwerth Drwyndwn ap Owain Gwynedd ( - Abt 1174)
:   │ Margred ferch Madog
:   │    └─ Llywelyn Fawr ap Iorwerth (Abt 1173 - 11 Apr 1240 Aberconwy Abbey, Conwy, Wales)
:   │     (One of the several mistresses of Llywelyn ap Iorwerth)
:   │     :   │ + John de Brewes (Abt 1197 of Gower, Swansea, Wales - Between 1231 and 1232)(m. 1219)
:   │     :   │ + Walter IV de Clifford (of Clifford, Herefordshire, England - Bef 23 Dec 1263)(m. Bef 2 Nov 1234)
:   │     :   │ + Donald of Mar ( - Aft 25 Jul 1297)
:   │     :   └─ Tegwared y Baiswen ap Llywelyn ab Iorwerth Drwyndwn ab Owain Gwybnedd (Abt 1200 - ??) =>
:   │     :    + Gwenllian ferch Ednyfed Fychan
:   │     Tangwystl
:   │     :   └─ Grufudd ap Llywelyn ab Iorwerth Drwyndwn ab Owain Gwybnedd ( - 1 Mar 1244 Tower of London,
:   │     :    London, England) =>
:   │     :    London, England) =>
:   │     :    + Senena ferch Caradog
:   │     Joan of England (Bef 1190 - 30 Mar 1236 bur.Llanvaes, Anglesey, Wales)(m. Bef 23 Mar 1205)
:   │     :   ├─ Gwladus Ddu ( - 1251 Windsor, Berkshire, England) =>
:   │     :   │ + Reynold de Briouze (of Abergavenny, Monmouthshire, Wales - Between 1227 and 1228)(m. 1215)
:   │     :   │ + Ralph de Mortimer (of Wigmore, Herefordshire, England -
:   │     :   │ 6 Aug 1246 bur.Wigmore Abbey, Herefordshire, England)(m. Bef 26 Oct 1230)
:   │     :   │ 6 Aug 1246 bur.Wigmore Abbey, Herefordshire, England)(m. Bef 26 Oct 1230)
:   │     :    + Robert de Quincy (Bef 1200 of Wakes Colne, Essex, England - Aug 1257)(m. Bef 5 Dec 1237)
:   │     + Eve Fitzwarine ( - Aft 1281)(m. 1239)
:   └─ Gwenllian ferch Owain
:    Owain Cyfeiliog ap Gruffudd ap Maredudd ap Bleddyn ap Cynfyn (Abt 1130 -
:    1197 Monastery of Strata Marcella, Welshpool, Montgomeryshire, Wales)
:    1197 Monastery of Strata Marcella, Welshpool, Montgomeryshire, Wales)
:       ├─ Gwenwynwyn ( - Abt 1216 Cheshire, England)
:       │ Margaret Corbet
:       │     + Hawise le Strange ( - 1310)(m. Bef 1242)
:       └─ Constance ferch Owain
:        David de Malpas
:           └─ Idonea de Malpas ( - Bef 1295 Malpas, Cheshire, England) =>
:            + Urian de St. Pierre (1220 - Between 1290 and 1300 Cheshire, England)
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)
:   │         +
:   └─ Rhodri ab Owain Gwynned ( - 1195)
:   
:       └─ Thomas ap Rhodri ab Owain Gwynned (Abt 1170 - ??)
:        Margred ferch Einion ap Seisyll
:            + Maredudd ab Owain ap Gruffudd ab Yr Arglwydd Rhys ( - Mar 1265 Llanbardarn Fawr, Ceredigion, Wales)
   └─ Gwenllian ferch Owain Gwynedd
    Hwfa ap Cynwrig ap Rhiwallon ap Dingad ap Tudur Trefor (Abt 1130 - ??)
    :   └─ Angharad ferch Hwfa ap Cynwrig ap Rhiwallon ap Dingad ap Tudur Trefor
    :    Cynwrig ab Iorwerth ap Gwgon ab Idnerth ab Edryd ab Inethan ab Iasedd ap Carwed ap Marchudd ap Cynan
    :    (Abt 1130 - ??)
    :    (Abt 1130 - ??)
    :       ├─ Ednyfed Fychan ap Cynwrig ab Iorwerth ap Gwgon ( - 1246) =>
    :       │ + Gwenllian ferch Yr Arglwydd Rhys ( - 1236)
    :       └─ Gwenllian ferch Cynwrig ab Iorwerth ap Gwgon ab Idnerth ab Edryd =>
    :        + Iorwerth ap Hwfa ap Cynddelw (of Treiorwerth, Bodedern, Wales - ??)
    Cadwgon ap Madog ap Cadwgon ap Bleddyn
       └─ Madog ap Cadwgon ap Madog ap Cadwgon (Abt 1170 of Nannau, Meirionnydd, Wales - ??)
        Efa ferch Madog ap Philip ab Uchtrud
            + Einion ap Seisyll (Abt 1170 - ??)