War of the Succession of Champagne

War of the Succession of Champagne
Date 1216-1222 Location County of Champagne (mostly concentrated in southeastern Champagne), Duchy of Lorraine, Alsace Result Theobald IV succeeds as count, Countess-Regent Blanche centralizes authority over local barons Territorial changes Champagne secures control over local barons east of the Marne river; Champagne's borders extended east at the expense of Lorraine
Belligerents
Count of Champagne Kingdom of France Holy Roman Empire Duchy of Burgundy County of Bar medieval Papacy	Most of the local barons in the eastern and southern borderlands of Champagne, united under Erard of Brienne claiming succession by marrying Theobald IV's cousin Philippa. Duchy of Lorraine
Commanders and leaders
Blanche of Navarre, Countess-Regent of Champagne Theobald IV of Champagne King Philip II of France Frederick II, Holy Roman Emperor Duke Odo III of Burgundy Count Henry II of Bar Pope Innocent III	Erard of Brienne-Ramerupt Theobald I, Duke of Lorraine Simon of Joinville

The War of the Succession of Champagne was a war from 1216 to 1222 between the nobles of the Champagne region of France, occurring within that region and also spilling over into neighboring duchies. The war lasted two years and de facto ended in 1218, but did not officially end until Theobald IV reached the age of majority in 1222, at which point his rivals abandoned their claims.