Rennes, Countship of

The Count of Rennes was originally the ruler of the Romano-Frankish civitas of Rennes.

From the middle of the ninth century these counts are Bretons with close ties to the Duchy of Brittany, which they often vie to rule.

From 990 the Counts of Rennes are usually Dukes of Brittany.

In 1203 the county is integrated into the ducal demesne.

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