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I've gone back to looking over the historical material, in particular Aemon the Dragonknight and things related to him. There's a mention by Sansa (in GoT) of Aemon defending Queen Naerys against the accustations of 'the evil' Ser Morgil. Is this one of the embroideries of the singers after Aemon's lifetime or is it based an actual event?
Well, the singers embroider everything, but there was a Ser Morgil and he did accuse Naerys of various things... probably adultery and treason with Aemon, but I haven't nailed all that down yet...
Also, just how much impact did the Rhoynar have on the modern customs of Dorne? Beyond the gender-blind inheritance laws, the couple of Rhoynish gods that smallfolk might have turned into saints or angelic-type beings, and perhaps the round shields, that is. In particular, given that Nymeria was a warrior-queen, is there a certain amazon tradition?
The Rhoynar did impact Dorne in a number of ways, some of which will be revealed in later books. Women definitely have more rights in Dorne, but I would not call it an "Amazon" tradition, necessarily. Nymeria had more in common with someone like Daenerys or Joan d'Arc than with Brienne or Xena the Warrior Princess.
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