Compact tree of William de Bohun 1st Earl of Northampton
| King John Lackland 1166–1216 | |||||||||||||
| Henry “Henry III” of Winchester 1207–1272 | Edward “Edward I” Longshanks 1239–1307 | ||||||||||||
| Countess Isabella of Gloucester 1173–1217 | |||||||||||||
| Humphrey Bohun VIII 1276–1322 |
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Elizabeth de Rhuddlan Plantagenet 1282–1316 | |||||||||||
| Eleanor de Castile 1241–1290 | |||||||||||||