Odo, Count of Champagne

Odo (Modern French: Eudes; c. 1040–1115) was Count of Troyes and of Meaux from 1047 to 1066, then Count of Aumale from 1069 to 1115. He was later also known as the count of Champagne and as Eudes II of Troyes.

Odo was the son of Stephen II of Troyes and Meaux, and Adele. He was still a minor at the death of his father, and his uncle Theobald III of Blois acted as regent of Troyes.

In 1060, Odo married Adelaide of Normandy, daughter of Robert I, Duke of Normandy and widow of Enguerrand II, Count of Ponthieu, Lord of Aumale and Lambert II, Count of Lens. After the death of Enguerrand's only daughter Adelaide, her mother Adelaide of Normandy became her heir and hence through his marriage Odo acquired the title Count (or Earl) of Aumale in Normandy by right of his wife.

Adelaide (sometime called Adeliza) was also sister of William the Conqueror, and Odo accompanied his brother-in-law in the Norman conquest of England (1066).Theobald III of Blois then seized Odo's counties in the Champagne region, One version states William I, for his services in the conquest gave Odo Holderness in Yorkshire. Another proposes that the Lordship of Holderness was granted to William's sister Adelaide, in 1087, and Odo became Earl of Holderness by right of his wife.

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