The view that Narmer/Menes and Hor-Aha were the same man is still a minority view, as far as I can tell from my own reading (which admittedly is a little out-of-date). If only for the sake of consistence with other articles, I've gone bold and changed "third" to "fourth", so that the line of Dyn. 1 pharaohs runs: Narmer/Menes, (Hor-)Aha, Djer, Djet.