I read yesterday but didn't see lore about the Archons, maybe it is good to have a listing. As far as I remember the Archons are re-incarnations of the 12 in "human" form.

Archons of the 6th Umbral Age

1. Ahldbhar - Rhalgr, the Destroyer (Race: Galka) (Name meaning Ahld = Old, bhar = Bear?) (Source, one of Uldah's normal quests)
2-12. ???

Archons of the 7th Umbral Age

1. Alfgar Uringar - ??? (Race: Hyur) (source is Gridania Company quests)
2-12. ???