Nielsen Hayden genealogy
Family: Richard of Cornwall, King of the Romans / Joan (F1235)
John, King of England (1166-1216) 
|
Isabel of Angoulême, Queen Consort of England (1188-1246)
|
Henry III, King of England (1207-1272)  |
| Joan of England (1210-1238) |
| Isabella of England (1214-1241) |
| Richard of Cornwall, King of the Romans (1209-1272)
|
| Joan ( -1285) |
| Richard de Cornwall ( -1296) |