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Which rulers and nobles joined the coalition against Philip II Augustus at the Battle of Bouvines?

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At the Battle of Bouvines on July 27, 1214, King Philip II Augustus defeated an international coalition organized by King John of England.1

The coalition against Philip II included the following key rulers and nobles:

  • Otto IV: The Holy Roman emperor, who led the imperial forces.12
  • Ferdinand (Ferrand) of Portugal: The count of Flanders, a French vassal who joined the alliance.13
  • Renaud (Raynald) of Dammartin: The count of Boulogne, another French vassal who opposed Philip.13
  • William Longsword: The Earl of Salisbury, who fought for the coalition and was captured during the battle.1

King John had orchestrated this alliance to reclaim territories lost to Philip in previous conflicts, planning a coordinated invasion from both the west and the northeast. However, after John was defeated at La Roche-aux-Moines, the remaining coalition forces were decisively beaten by Philip at Bouvines.13