Nielsen Hayden genealogy
Gwladus ferch Llywarch
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| Margaret ferch Llewelyn -1265 |
| Margaret ferch Llewelyn | |
| D: | 1265 |
John de Brewes Abt 1197-1232 |
| John de Brewes | |
| B: | Abt 1197 |
| of Gower, Swansea, Wales | |
| M: | 1219 |
| D: | Between 1231 and 1232 |
| Walter IV de Clifford -Bef 1263 |
| Walter IV de Clifford | |
| B: | of Clifford, Herefordshire, England |
| M: | Bef 2 Nov 1234 |
| D: | Bef 23 Dec 1263 |
| Ellen -Aft 1294 |
| Ellen | |
| D: | Aft Feb 1294 |
| Donald of Mar -Aft 1297 |
| Donald of Mar | |
| D: | Aft 25 Jul 1297 |
| Tegwared y Baiswen ap Llywelyn ab Iorwerth Drwyndwn ab Owain Gwybnedd | |
| B: | Abt 1200 |
| Llywelyn Fawr ap Iorwerth Abt 1173-1240 |
| Llywelyn Fawr ap Iorwerth | |
| B: | Abt 1173 |
| D: | 11 Apr 1240 |
| Aberconwy Abbey, Conwy, Wales | |
| Grufudd ap Llywelyn ab Iorwerth Drwyndwn ab Owain Gwybnedd | |
| D: | 1 Mar 1244 |
| Tower of London, London, England | |
| Gwladus Ddu -1251 |
| Gwladus Ddu | |
| D: | 1251 |
| Windsor, Berkshire, England | |
| Reynold de Briouze -1228 |
| Reynold de Briouze | |
| B: | of Abergavenny, Monmouthshire, Wales |
| M: | 1215 |
| D: | Between 1227 and 1228 |
| Ralph de Mortimer -1246 |
| Ralph de Mortimer | |
| B: | of Wigmore, Herefordshire, England |
| M: | Bef 26 Oct 1230 |
| D: | 6 Aug 1246 |
| Ellen of Wales -Bef 1253 |
| Ellen of Wales | |
| D: | Bef 24 Oct 1253 |
| Robert de Quincy Bef 1200-1257 |
| Robert de Quincy | |
| B: | Bef 1200 |
| of Wakes Colne, Essex, England | |
| M: | Bef 5 Dec 1237 |
| D: | Aug 1257 |
| Joan of England Bef 1190-1236 |
| Joan of England | |
| B: | Bef 1190 |
| M: | Bef 23 Mar 1205 |
| D: | 30 Mar 1236 |
| Eve Fitzwarine -Aft 1281 |
| Eve Fitzwarine | |
| M: | 1239 |
| D: | Aft 1281 |
| Iorwerth Drwyndwn ap Owain Gwynedd -Abt 1174 |
| Iorwerth Drwyndwn ap Owain Gwynedd | |
| D: | Abt 1174 |
| Gruffydd ap Gwenwynwyn -Aft 1286 |
| Gruffydd ap Gwenwynwyn | |
| D: | Aft 17 Feb 1286 |
| Hawise le Strange -1310 |
| Hawise le Strange | |
| M: | Bef 1242 |
| D: | 1310 |
| Gwenwynwyn -Abt 1216 |
| Gwenwynwyn | |
| D: | Abt 1216 |
| Cheshire, England | |
| Idonea de Malpas -Bef 1295 |
| Idonea de Malpas | |
| D: | Bef 1295 |
| Malpas, Cheshire, England | |
| Urian de St. Pierre 1220-1300 |
| Urian de St. Pierre | |
| B: | 1220 |
| D: | Between 1290 and 1300 |
| Cheshire, England | |
| Owain Cyfeiliog ap Gruffudd ap Maredudd ap Bleddyn ap Cynfyn | |
| B: | Abt 1130 |
| D: | 1197 |
| Monastery of Strata Marcella, Welshpool, Montgomeryshire, Wales | |
|
| Owain Gwynedd, King of Gwynedd | |
| D: | 1169 |