Cognomen Flaghac (Flaghac 
) , in the world, is an extremely rare family name. The surname Flaghac is characteristic of Western Europe, particularly France, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Flaghac | France |
| marguerite victoire le normant de flaghac FR (b. 1768) |
|
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| jean-jacques le normant de flaghac French politician (1816-1890), FR (b. 1816) |
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