| Henry De Percy Born: 6 FEB 1299/1300 Topcliffe, Yorkshire, England Died: 26 FEB 1351/1352 Warkworth Castle, Alnwick, Northumberland, England | |||||
| Henry De Percy Born: ABT 1320 Alnwick, Northumberland, England Died: 18 MAY 1368 Warkworth Castle, Alnwick, Northumberland, England | |||||
| Ideona De Clifford Born: ABT 1300 Appleby Castle, Westmorland, England Died: 24 AUG 1365 | |||||
| Llewelyn II ap Iorwerth Born: 1173 Dolyddelan, Wales Died: 11 APR 1240 Aberconwy, Carnarvonshire, Wales | |||||
| Mary Plantagenet Born: ABT 1320 Grismond Castle, Monmouth, Monmouthshire, England Died: 1 SEP 1362 | |||||
| Margaret De Clifford Born: ABT 1307 Died: DECEASED | |||||
| Margaret De Neville Born: 12 FEB 1340/1341 Raby, Staindrop, Durham, England Died: 12 MAY 1372 Warkworth Castle, Alnwick, Northumberland, England | |||||