King Stephen’s son and heir, Eustace IV, Count of Boulogne, first mentioned in one of his parents' charters dated no later than August 113, had done homage in 1137 for Normandy to Louis VII of France, whose sister, Constance, he subsequently married in 1140 (as a widow she will remarry to Count Raymond V of Toulouse).

Eustace had been knighted in 1147, at which date he was probably from sixteen to eighteen years of age.

He had joined Louis in 1151 in an abortive raid upon Normandy, which had accepted the title of the Empress Matilda, and was at that time defended by her husband, Geoffrey of Anjou.

Stephen at a council held in London on April 6, 1152, had induced a small number of barons to pay homage to Eustace as their future king; but the Archbishop of Canterbury, Theobald of Bec, and the other bishops had declined to perform the coronation ceremony on the grounds that the Roman curia had declared against the claim of Eustace.

Henry arrives on January 6, 1153, in England.

The civil war between Stephen and Matilda had sputtered to a halt: the departure of Matilda for Normandy in 1148 and the subsequent death of her husband had initiated a period of relative calm.

After an indecisive battle at Wallingford, and following the death of Eustace IV in August, the king is persuaded to reach a compromise with Matilda.

Henry II and Louis VII: The War of 1167 and the Struggle for Dominance in France

By the mid-1160s, tensions between Henry II of England and Louis VII of France had reached a breaking point. Henry’s territorial ambitions and growing influence in southern France deeply angered the French king, while Louis’s attempts to counter Henry’s expansion through alliances and military action only escalated their rivalry. These tensions culminated in open war in 1167, triggered by a seemingly minor dispute over the collection of funds for the Crusader states in the Levant.

Henry’s Expansionist Policies and the Road to War

1. Henry’s Attempt to Seize the Auvergne

   • Henry sought to expand his control in central France, attempting to seize the Auvergne, a move that infuriated Louis VII.
   • The region was strategically important, serving as a buffer zone between Henry’s territories in Aquitaine and the Capetian royal domain.

2. Pressuring Raymond V of Toulouse (1161–1165)

   • Henry had long sought to extend his authority over the County of Toulouse, a region traditionally under Capetian influence.
   • His efforts included:
     • Personally campaigning in Toulouse in 1161.
     • Sending the Archbishop of Bordeaux against Raymond in 1164.
     • Encouraging Alfonso II of Aragon to attack Toulouse from the south, using pressure from multiple fronts.
   • In 1165, Raymond divorced Louis VII’s sister, severing his ties with the Capetian dynasty, and attempted to align himself with Henry instead.

3. Tensions Escalate into Open War (1167)

   • The final spark was a trivial disagreement over how funds for the Crusader states should be collected, leading to outright conflict.
   • Louis VII formed an anti-Henry coalition, allying with:
     • The Welsh and Scots, encouraging uprisings in Britain.
     • The Bretons, who remained resentful of Henry’s seizure of their duchy.
   • Louis launched an attack on Normandy, attempting to strike at the heart of Henry’s continental possessions.

Henry’s Response: The Burning of Chaumont-sur-Epte and the Collapse of Louis’s Alliance

• In retaliation, Henry struck at Chaumont-sur-Epte, where Louis VII kept his primary military arsenal.
• He burned the town to the ground, dealing a major blow to Louis’s war effort.
• With his military resources severely weakened, Louis was forced to abandon his allies and agree to a private truce with Henry.

Henry’s Next Move: Suppressing Rebellion in Brittany

• With Louis effectively neutralized, Henry turned his attention back to Brittany, where local barons still resisted his rule.
• His forced seizure of the duchy and arranged betrothal of Geoffrey to Constance of Brittany had sparked resentment among the Breton nobility.
• Now free from conflict with France, Henry prepared to crush the remaining opposition and fully consolidate his control over Brittany.

Conclusion: The Balance of Power in 1167

• Henry’s decisive military response left Louis politically weakened, unable to effectively challenge Angevin power.
• However, Henry’s aggressive expansionism continued to fuel Capetian resistance, ensuring that Anglo-French tensions remained high.
• The conflict of 1167 was yet another chapter in the long struggle between the Angevins and Capetians, setting the stage for further wars and territorial disputes in the years to come.