Family: 1st Earl of Cornwall Richard Plantagenet / Countess of Cornwall Isabel Marshall (F7487)
m. 30 Mar 1231Drag or scroll to see more of the chart.
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 | King of England John Plantagenet (1166-1216)
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 | Queen Consort of England Isabella of Angoulême (1188-1246)
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 | Lady of Wales and Snowdon Lady Joan Plantagenet (1191-1237)  |
 | Henry Plantagenet, III (1207-1272) |
| 1st Earl of Pembroke William Marshall, the Elder (1146-1219) |
| 4th Countess of Pembroke Isabella de Clare (1172-1220)
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| Sibyl Marshall (1209-1245) |
| 1st Earl of Cornwall Richard Plantagenet (1209-1272)
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| Countess of Cornwall Isabel Marshall (1200-1240)
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