Okay, so far there is a certain tatoo appearing on most the Scions of the Seventh Dawn, the only people that Don;t have it are Minfillia and the WoL (assuming that isn;t a Legacy thing), you could claim that it is the emblem of one of the groups that made up the Scions of the 2th Dawn...expect that G'hrara also has the same tatoo, (though I forget if there was overlap between the Circle of Knowing and the Sons of Saint Coinach)

The question is (Besides if players can wear the tatoo) if what the tatoo is.