| | Elizabeth Mortimer 1370/71 CE–1417 | | |
| | Henry De Percy 1341/42 CE–1405 | | | | Mary De Lancaster 1321–1362 | | | | Baron Henry III De Percy – |
| | | Henry De Lancaster 1281–1345 Maud De Chaworth 1282–1317 | | | | Edmund De Lancaster 1245–1296 Blanche De Artois 1243–1302 | | | | Eleanor De Provence –1291 | | |
| | | Robert I De Artois 1216–1249/50 CE | | |
|
|
|
|
|
|
|
|