Erispoe de Vannes II & Marmoec de Poher 
They had a son named Alain.
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Children
Comte de Vannes, Duc de Bretagne à Vannes Alain le Grand de Vannes I
Alain was born in 0850.2 He died at the age of 57 in 0907.2
1 http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=PED&db=phco&id=I15717
2 http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=PED&db=bsgenealogie&id=25815I&style=TABLE
2 http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=PED&db=bsgenealogie&id=25815I&style=TABLE