Margaery at least believes Tyrion is innocent.

Olenna more or less told her as much, didn't she? Although I guess she didn't go into detail about how the murder was accomplished.

Yeah, I'd go very near to making the verb "know" rather than "believe"

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If the Audience Were a Character On Game of Thrones - Neatorama

Inexperienced as I am with warfare of any scale, if Dany took the Iron Throne and still had the Unsullied (or most of them) and dragons (or most of them), couldn't she make Slaver's Bay behave?

My nurse keeps asking me questions I can't answer. Who's Oberyn related to? The Starks? She insists that, but I don't remember having heard it.

Oberyn (Oberon?) is a Martell, and I don't think they're related to the Lannisters at all, although I could be wrong.

The Iron Throne doesn't have sovereignty over Slaver's Bay, does it? I thought Slaver's Bay was part of the world Dany's in now, not Westeros. But again, I could be wrong!

The Iron Throne doesn't have sovereignty over Slaver's Bay, does it?

No, but I assume if she did it right, she'd be more powerful. Or would it be one more example of "once you've beaten it you have to stay with it"?

Can't other people lead her armies back to the Bay while she sics one of her dragons on her Westeros detractors?

It doesn't make sense for Oberyn to be a Stark, otherwise why would the Lannister daughter be sent there for safekeeping. Do we know of any Stark or Tully relatives other than crazy attachment parenting lady?

Oberyn is of the royal house of Dorne, who are not related to anyone, really, except that they did intermarry with the Targaryens a lot, back in the day. He's from the opposite end of the continent from the Starks, and probably particularly dislikes them, as his sister's (the dead one he keeps bringing up) husband (dead prince Rhaegar) left her for Ned Stark's sister (Now also dead, but who are we to let that stop us from holding a grudge?).

Slaver's Bay is in Essos, across the sea from Westeros (to the east. Isn't George clever.), though on the same continent as where Stannis is/recently was (Braavos), which is the same city where Arya's fighting teacher was from. Essos is not a single political entity in the way the seven kingdoms of Westeros are (to the extent that they are...) it's more the Classical Greek and Italian city-state model.

Do we know of any Stark or Tully relatives other than crazy attachment parenting lady?

Ned's brother Benjen disappeared north of the Wall back in season...1? He's the only other close kin

Truly-wise, the big ones are the Blackfish, last seen leaving just before the Red Wedding got bloody to take a piss. Also, shit...what'shisname who can't shoot a bow for shit and was the one getting married to the Frey girl at the Red Wedding. He is, I believe, currently captive of the Freys. He's also useful (at least till he has an heir), as he's Lord of Riverrun.

Also, Slaver's Bay is much further away than the nearer cities like Braavos or Pentos (the city Dany was in at the very beginning of the show). Essos is a very big place. It's essentially the Eurasian continent, so it is appropriately sized.

Also, shit...what'shisname who can't shoot a bow for shit and was the one getting married to the Frey girl at the Red Wedding.

Edmure.