Nielsen Hayden genealogy
Owain Gwynedd, King of Gwynedd

( = Descendancy chart to this point,
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- 1 Owain Gwynedd, King of Gwynedd [1] d. 1169
Gwladus ferch Llywarch
- 2 Iorwerth Drwyndwn ap Owain Gwynedd [1.1]
d. Abt 1174
Margred ferch Madog
- 3 Llywelyn Fawr ap Iorwerth [1.1.1]
b. Abt 1173 d. 11 Apr 1240
(One of the several mistresses of Llywelyn ap Iorwerth)
- 4 Margaret ferch Llywelyn [1.1.1.1]
d. 1265 [ =>]
- 4 Ellen [1.1.1.2]
d. Aft Feb 1294 [ =>]
- 4 Tegwared y Baiswen ap Llywelyn ab Iorwerth Drwyndwn ab Owain Gwybnedd [1.1.1.3]
b. Abt 1200 [ =>]
- 4 Margaret ferch Llywelyn [1.1.1.1]
Tangwystl
- 4 Grufudd ap Llywelyn ab Iorwerth Drwyndwn ab Owain Gwybnedd [1.1.1.4]
d. 1 Mar 1244 [ =>]
- 4 Grufudd ap Llywelyn ab Iorwerth Drwyndwn ab Owain Gwybnedd [1.1.1.4]
Joan of England b. Bef 1190 d. 30 Mar 1236
- 4 Gwladus Ddu [1.1.1.5]
d. 1251 [ =>]
- 4 Ellen of Wales [1.1.1.6]
d. Bef 24 Oct 1253 [ =>]
- 4 Gwladus Ddu [1.1.1.5]
- + Eve Fitzwarine d. Aft 1281
- 3 Llywelyn Fawr ap Iorwerth [1.1.1]
- 2 Gwenllian ferch Owain [1.2]
Owain Cyfeiliog ap Gruffudd ap Maredudd ap Bleddyn ap Cynfyn b. Abt 1130 d. 1197
- 3 Gwenwynwyn [1.2.1]
d. Abt 1216
Margaret Corbet
- 4 Gruffydd ap Gwenwynwyn [1.2.1.1]
d. Aft 17 Feb 1286 [ =>]
- 4 Gruffydd ap Gwenwynwyn [1.2.1.1]
- 3 Constance ferch Owain [1.2.2]
David de Malpas
- 4 Idonea de Malpas [1.2.2.1]
d. Bef 1295 [ =>]
- 4 Idonea de Malpas [1.2.2.1]
- 3 Gwenwynwyn [1.2.1]
- 2 Iorwerth Drwyndwn ap Owain Gwynedd [1.1]
Cristin ferch Gronwy ab Owain ab Edwin
- 2 Angharad ferch Owain [1.3]
Gryffydd "Maelor" ap Madog, Prince of Northern Powys d. 1191
- 3 Madog ap Gruffudd Maelor ap Madog ap Maredudd ap Bleddyn [1.3.1]
d. 1236
Gwladus ferch Ithel ap Rhys ab Ifor ap Hywel ap Morgan Fychan ap Morgan Hir
- 4 Gruffudd ap Madoc [1.3.1.1]
d. 1269 [ =>]
- 4 Maredudd ap Madog [1.3.1.2]
[ =>]
- 4 Gruffudd ap Madoc [1.3.1.1]
- 3 Madog ap Gruffudd Maelor ap Madog ap Maredudd ap Bleddyn [1.3.1]
- 2 Rhodri ab Owain Gwynned [1.4]
d. 1195
- 3 Thomas ap Rhodri ab Owain Gwynned [1.4.1]
b. Abt 1170
- 3 Thomas ap Rhodri ab Owain Gwynned [1.4.1]
- 2 Angharad ferch Owain [1.3]
(Unknown mistress of Owain Gwynedd)
- 2 Gwenllian ferch Owain Gwynedd [1.5]
Hwfa ap Cynwrig ap Rhiwallon ap Dingad ap Tudur Trefor b. Abt 1130
- 3 Angharad ferch Hwfa ap Cynwrig ap Rhiwallon ap Dingad ap Tudur Trefor [1.5.1]
Cynwrig ab Iorwerth ap Gwgon ab Idnerth ab Edryd ab Inethan ab Iasedd ap Carwed ap Marchudd ap Cynan b. Abt 1130
- 4 Ednyfed Fychan ap Cynwrig ab Iorwerth ap Gwgon [1.5.1.1]
d. 1246 [ =>]
- 4 Gwenllian ferch Cynwrig ab Iorwerth ap Gwgon ab Idnerth ab Edryd [1.5.1.2]
[ =>]
- 4 Ednyfed Fychan ap Cynwrig ab Iorwerth ap Gwgon [1.5.1.1]
- 3 Angharad ferch Hwfa ap Cynwrig ap Rhiwallon ap Dingad ap Tudur Trefor [1.5.1]
Cadwgon ap Madog ap Cadwgon ap Bleddyn
- 3 Madog ap Cadwgon ap Madog ap Cadwgon [1.5.2]
b. Abt 1170
Efa ferch Madog ap Philip ab Uchtrud
- 4 Nest ferch Madog [1.5.2.1]
[ =>]
- 4 Nest ferch Madog [1.5.2.1]
- 3 Madog ap Cadwgon ap Madog ap Cadwgon [1.5.2]
- 2 Gwenllian ferch Owain Gwynedd [1.5]