| | Joan FITZBERNARD 1273–1309 | | | | Hawise De QUINCY 1242–1285 | | | | | Robert De QUINCY 1186–1257 Elen (Helen) Verch LLEWELYN 1206–1253 | | | | Saher IV, De QUINCY 1155–1219 Margaret De HARCOURT 1156–1235 | | |
| | | Llewelyn Ap IORWERTH Llewelyn the Great 1173–1240 Joan Princess Of ENGLAND 1188–1236 Tangwystl Verch LLYWARCH 1168–… | | |
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