Odo II of Blois

Odo II (c. 985–1037), son of Count Odo I of Blois and Bertha of Burgundy, ruled Blois and Chartres from 1004. Defeated by Fulk Nerra of Anjou at Pontlevoy in 1016, he seized Troyes, Meaux and Champagne without royal approval when his cousin Stephen I died heirless around 1020, uniting Blois and Champagne under one lord.

He was later offered the Lombard crown and invaded Burgundy in 1032, but withdrew before an imperial and French royal coalition. In 1037 he attacked Lorraine and fell on 15 November at the Battle of Bar-le-Duc against Duke Gothelo. His sons by Ermengarde of Auvergne were Theobald and Stephen.