How Unexpected Heirs Henry I, John, and Edward II Reshaped Medieval English Succession

Key facts

• Male primogeniture became standard practice in Western Europe by the 12th century, with eldest sons trained for kingship and younger sons directed toward military, marriage, or Church careers.
• William the Conqueror divided his lands in 1087: Robert Curthose received Normandy, William Rufus (William II) received England, and Henry received cash plus estates in Buckinghamshire and Gloucestershire.
• William Rufus was killed by an arrow while hunting in the New Forest in August 1100; Henry seized the treasury at Winchester and was crowned king three days later.
• Henry I imprisoned his brother Robert in 1106 and seized Normandy; Robert remained jailed until his death in 1134.
• King John, born in 1166 as the youngest surviving son of Henry II and Eleanor of Aquitaine, was nicknamed 'Lackland' and appointed Lord of Ireland before succeeding the childless Richard in 1199.
• John lost most of England's continental lands, was forced by rebellious barons to seal Magna Carta, and died in 1216, allowing his nine-year-old son Henry III to be crowned.
• Edward II, the only surviving son of Edward I and Eleanor of Castile, was criticized for military failures against the Scots and for relationships with Piers Gaveston and Hugh Despenser the Younger; his wife Isabella of France invaded England in 1326 and he was murdered at Berkeley Castle.
• Richard II became king at age ten in 1377 after the deaths of his brother, his father Edward the Black Prince in 1376, and his grandfather Edward III in 1377; he was deposed by Henry Bolingbroke, who became Henry IV.