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Re: the E1b hypothesis: We need to remember that we're talking about two different European E1b clades, E1b-M81 (probably came over from North Africa) and E1b-M78 (probably came over from the Near East). Now we're pretty confident that E1b-M81 came over well before the Moors, possibly as long ago as the Neolithic (I'm not familiar with STR dating of this but that's what I've read). So if we're talking about migrations out of pre-R1b Iberia, there's a very good chance that they had a lot of I2a1a, G2a, and E1b-M81... in fact, the spread of E1b-M81 into France is very likely explainable by Beaker Culture. I don't see a similar pattern for E1b-M78 though, so I'm not sure it solves our E1b problem.