From the Wikipedia page 
Vienne (French pronunciation: [vjɛn]) is a department in the French region of Nouvelle-Aquitaine. It takes its name from the river Vienne.
Established on March 4, 1790 during the French Revolution, Vienne is one of the original 83 departments. It was created from parts of the former provinces of Poitou, Touraine, and Berry, the latter being a part of the Duchy of Aquitaine until the 15th century.