Henry I’s Attempt to Secure William Adelin’s …

Years: 1115 - 1115

Henry I’s Attempt to Secure William Adelin’s Succession in Normandy (1115 CE)

By 1115, King Henry I of England sought to secure the succession of his only legitimate son, William Adelin, as Duke of Normandy, ensuring the continued union of England and Normandy under the House of Normandy. To accomplish this, he attempted to gain formal recognition from King Louis VI of France, the Capetian overlord of the duchy.


The Homage Proposal and Norman Support

  • Henry crossed into Normandy in 1115 and assembled the Norman barons, requiring them to swear loyalty to William Adelin as the rightful heir to the duchy.
  • As Duke of Normandy, Henry still owed feudal homage to the King of France, and he sought to legitimize his son's inheritance by negotiating a formal settlement with Louis VI.
  • In exchange for Louis’s recognition of William Adelin, Henry offered a substantial payment, hoping to dissuade the Capetians from backing any rival claimants.

The Failure of Negotiations and the Capetian Response

  • Initially, negotiations between Henry I and Louis VI appeared close to a resolution, with Louis considering the financial compensation in return for recognizing William as Duke of Normandy.
  • However, the deal collapsed, as Louis VI ultimately sided with Baldwin VII of Flanders, a staunch Capetian ally, and rejected Henry’s proposal.
  • Instead, Louis declared William Clito, the son of Robert Curthose and Henry’s imprisoned elder brother, as the rightful Duke of Normandy.

Consequences and Renewed Conflict

  • Henry’s failure to secure Capetian recognition meant that William Clito became a serious rival, as his claim to Normandy was now backed by the King of France and the Count of Flanders.
  • This diplomatic breakdown intensified the Anglo-Norman conflict with France, as Louis VI actively worked to undermine Henry’s authority in Normandy.
  • The rivalry over Normandy’s succession would persist for years to come, culminating in military clashes between Henry I and Capetian-backed forces, shaping the broader struggle for dominance in Atlantic West Europe.

Despite Henry’s political maneuvering, Louis VI’s support for William Clito marked the beginning of a prolonged Capetian-Norman rivalry, foreshadowing the tensions that would define Anglo-French relations throughout the 12th and 13th centuries.

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