Nielsen Hayden genealogy
Descendants of Gwenllian ferch Owain
Father: Owain Gwynedd, King of Gwynedd ( - 1169 bur.Bangor Cathedral, Bangor, Gwynedd, Wales)
Mother: Gwladus ferch Llywarch
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
   │    └─ Gruffydd ap Gwenwynwyn ( - Aft 17 Feb 1286)
   │     Hawise le Strange ( - 1310)(m. Bef 1242)
   │        │ + Fulk V Fitzwarine (14 Sep 1251 Whittington, Oswestry, Shropshire, England - 24 Nov 1315)
   │        │ (m. Bef 25 Feb 1277)
   │        │ (m. Bef 25 Feb 1277)
   │        │ + Joanna Corbet ( - Bef 29 Sep 1348)
   │        └─ Llywelyn ap Gruffudd ap Gwenwynwyn ( - Bef 29 Jun 1295) =>
   │         + Margred ferch Mardedudd Goch ap Maredudd ab Iorwerth Fychan
   └─ 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)
           │ + Randle le Roter ( - Bef 1296)
            + Katherine Dutton ( - Aft 1292)