Family: Alan IV "Fergant", Duke of Brittany / Hermengarde, Duchess (F852)
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 | Hoel (1020-1084)
|
 | Havoise ( -1072)
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| Mattahas III (1061- ) |
| Endon (1063- ) |
| Adele (1065-1152) |
| Havoise (1067- ) |
| Foulques IV, Count of Anjou (1043-1109)
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| Alan IV "Fergant", Duke of Brittany (1059-1119)
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| Hermengarde, Duchess ( -1147)
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| Conan III "Le Gros", Duke of Brittany (1071-1148)  |
| Geoffroy LE REUX (1075-1116) |
| Agnes (Avoise) (1078- ) |
| Hawise FERGANT (1081- ) |