| | Sir Robert Howard 1336–1388 Margaret de Scales 1339–1416 | | |
| | Sir Admiral John Howard 1310–1347 | | |
| | Joan de Cornwall 1286–1342 Sir John Howard 1276–1331 | | |
| | Richard “Earl of Cornwall” de Cornwall 1252–1280 | | | | Richard “King of the Romans” Plantagenet 1209–1272 Joan de Valletort 1214–1267 | | | | King John Lackland 1166–1216 Countess Isabella of Gloucester 1173–1217 | | | | King Henry “Henry II” Curtmantle 1133–1189 Eleanor of Aquitaine 1122– | | |
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