Before becoming bishop, he was the Benedictine abbot of the monastery of Saint-Symphorien.
Odo may have attended the consecration of the new Abbey of Saint-Denis in 1144.
[1] When he died, the people and canons of Beauvais elected the king's brother, Henry, as bishop.
When Hugh Primas attacked the bishop of Beauvais in a poem, he was referring to either Odo III or Henry.
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