County of Nantes

The counts of Nantes were originally the Frankish rulers of the Nantais under the Carolingians. Their county served as a march against the Bretons of the Vannetais. In the mid-ninth century, the county finally fell to the Bretons and the title became a subsidiary title of the Breton rulers.

Frankish Counts

• 786 – 818 Guy, as prefect of the Breton March
• 818 – 831 Lambert I
• 831 – 841 Ricwin
• 841 – 843 Renaud
• 843 – 846 Lambert II
• 846 – 849 Amaury, imposed by Charles the Bald in opposition to Lambert II
• 849 – 851 Lambert II (restored)

Later Counts

• ? – 1156 Hoel, Count of Nantes - disinherited from the Ducal Crown of Brittany in favor of his sister Bertha
• 1156 – 1158 Geoffrey II, Duke of Brittany, son of Henry II of England
• 1158 – 1189 Henry II of England - gained the Countship under his Treaty with the Duke of Brittany
• 1189 – 1199 Richard I of England - son of Henry II of England