: Where did "spirit A and spirit
: B, C?" come from? Gurps?
It wasn't explicitly laid out plainly, but GURPS is where we got the info that inspired it. GURPS mentioned that the Legion doesn't employ horses because Alric hates horses, and some people in the Mythworld think this is because he is a reincarnation of Moagim, whose body is still being dragged about by four immortal horses. This means that if Alric is a reincarnation of Moagim, then he was also Tireces, and if Moagim Reborn is correctly named then half the the Heroes/Levellers we know of are incarnations of the same spirit. Another two of them are the same person (Connacht/Balor), so it seems like the two we don't know are likely also related to him. Meaning that every Leveller and Hero we know is an incarnation of one of those two spirits.