Historical region, western central France. It was bounded by Brittany, Anjou, Touraine, Marche, and the Atlantic Ocean. It was inhabited by the ancient Gallic tribe of Pictones and became part of Roman Aquitania. A meeting place of northern and southern cultures, its golden age (11th–12th century) was characterized by great Romanesque art and architecture. The counts of Poitiers were succeeded by the Angevin kings of England, but by 1375 the French had won the region back. It was a province of France until the French Revolution, when it was divided into three departments. It is predominantly a rural area; regional specialties include seafood and white wine.
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The region of Poitou was called Thifalia (or Theiphalia) in the sixth century.
There is a marshland called the Poitevin marsh (French Marais Poitevin) on the gulf of Poitou, on the west coast of France, just north of La Rochelle.
Many of the Acadians who settled in what is now Nova Scotia beginning in 1604 and later to New Brunswick, came from the region of Poitou. After the Acadians were deported by the British beginning in 1755, a number of Acadians eventually took refuge in Poitou. A large portion of these refugees also migrated to Louisiana in 1785 and following years became known as Cajuns (see Cajuns).