Rohan

Rohan grew beside a castle and priory established by Alain de Rohan in the twelfth century, becoming the seat of a Breton viscounty. During the Breton War of Succession, English forces took and burned the town in 1342. It was rebuilt, though the viscounty's seat moved to Pontivy in 1418.

The castle suffered further attacks in the late fifteenth century amid conflict between Brittany and France. Repaired in the early sixteenth century, it was gradually abandoned as the Rohan family preferred other residences. A market and fairs served the small town and its surrounding countryside.