Occupation: Duke of Aquitaine and Count of Poitiers; Duke of Gascony
Odo inherited the duchy of Gascony at the death of his uncle Sans VI Guilhem, who did not have sons. In December 1038, his older half-brother Duke William VI of Aquitaine died without an heir, and so Odon became duke of Aquitaine and count of Poitiers (1038-1039). Thus Gascony was united with Aquitaine (or rather reunited, since it had been part of Aquitaine in Antiquity and in the days of the Carolingian kings of Aquitaine).
Maureen Farrell, firsthand knowledge. Click the Changes tab for the details of edits by Maureen and others.