Historical Periods
Duchy of Brittany (947–989)
947 CE – 989 CE
Capital: NantesArea: 31,988 km²
Duchy of Brittany (990–1146)
990 CE – 1146 CE
Capital: NantesArea: 37,069 km²
Duchy of Brittany (1147–1151)
1147 CE – 1151 CE
Capital: NantesArea: 37,226 km²
Duchy of Brittany (1152–1168)
1152 CE – 1168 CE
Capital: NantesArea: 37,387 km²
Duchy of Brittany (1169–1187)
1169 CE – 1187 CE
Capital: NantesArea: 37,320 km²
Duchy of Brittany (1206–1219)
1206 CE – 1219 CE
Capital: NantesArea: 37,320 km²
Duchy of Brittany (1220–1249)
1220 CE – 1249 CE
Capital: NantesArea: 37,387 km²
Duchy of Brittany (1250–1293)
1250 CE – 1293 CE
Capital: NantesArea: 37,272 km²
Duchy of Brittany (1294–1332)
1294 CE – 1332 CE
Capital: NantesArea: 37,226 km²
Duchy of Brittany (1333–1343)
1333 CE – 1343 CE
Capital: NantesArea: 37,387 km²
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