| | Robert De QUINCY 1186–1257 Elen (Helen) Verch LLEWELYN 1206–1253 | | | | Saher IV, De QUINCY 1155–1219 Margaret De HARCOURT 1156–1235 | | | | | Robert Blanchmains HARCOURT Earl of Leichster 1121–1190 Petronille De GRENTMESNIL …–… | | |
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| | | Llewelyn Ap IORWERTH Llewelyn the Great 1173–1240 Joan Princess Of ENGLAND 1188–1236 Tangwystl Verch LLYWARCH 1168–… | | | | Iorwerth Drwyndwn Ap OWAIN 1145–1184 Margred Verch MADOG 1129–… | | |
| | | John Lackland King Of ENGLAND 1166–1216 Isabella De TAILLEFER 1180–1245 Mrs-John Concubine Of ENGLAND 1164–… Mrs-John Concubine Of ENGLAND 1168–… Mrs-John, Concubine Of ENGLAND 1168–… | | |
| | | Llywarch Goch Ap IORWERTH 1139–… Tangwystl Verch LLYWARCH 1141–… | | |
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