(Spoilers Extended) On Oberin duel with lord Yronwood
Just got to this part on wiki, which used to evade me.
"At the age of sixteen, Oberyn was found in bed with the lover of Lord Edgar Yronwood, so the lord challenged him to a duel. The duel was to first blood, given the prince's youth and high birth, and both took cuts. Edgar's wounds festered and killed him. Oberyn has been known as the "Red Viper" ever since by friends and foes alike, due to rumors that he fought the duel with a poisoned blade. Afterward, Oberyn was sent to Oldtown and then to Lys in temporary exile (though none called it such) in order for House Martell to make peace with House Yronwood, and Prince Quentin Martell was sent as a ward to Yronwood."
...
I am sorry, what? A prince of Martell fought on a duel head of primary vassal House over a lover (fine so far). Duel was to first blood. Prince abused the rules and used poison to kill the lord.
This is, by every legal definition:
Murder with intent - House Martell, suzerain, murdered one of principle vassals using poison
Sacrilege - before the duel each party gives oaths, and he broke them by intentionally breaking the "first blood" part, with full intent
In larger westeros, this is Prince Joffrey challenging Ned Stark to a duel to first blood, poisoning him with a scratch and having him die right after. Or prince Maekar poisoning the Laughing Storm on a duel.
And the result was, instead of immediate rebellion or appeal to royal justice - which at the time Targarien provided not terribly, mad king wasn't mad yet - they just... got a hostage and ate open murder of their lord? Just like that? Without even forcing Oberyn to take the black for duel oath breaking?
House Yronwood are either the biggest bitches in Dorne, or Martells paid royal ransom and water rights for half the river on top of that. I've no idea how this didn't immediately escalated to blood feud war to kill Oberyn by sons of Edgar. If they let Martells to just murder their lords casually, everyone will start doing it.