Who tried to kill Bran and who killed Joffrey?

I don’t think these two questions have been answered yet have they? As far as I can tell they haven’t but in both circumstances whoever it was tried to frame Tyrion for the murder/attempted murder. Does this add weight to one of the theories I hate the most, that Tyrion is a secret Targaryian? Dany’s assassination attempts and the multiple times that someone has tried to frame Tyrion for murder that if convicted would have put his head on a spike. It makes me wonder. 

Do we know who tried to kill Bran using Tyrion’s blade, and who poisoned Joffrey?

Joffrey is who the books and Martin lead us to believe. Both Tyrion and Jaime come to the conclusion that it was Joffrey in the book that Martin said it would be resolved. If it wasn't my money is on Mance.

Tyrion isn't a Targ. Jamie and Cersei are a maybe.

Joffrey was killed by Baelish and Olenna. We have the GOHH prophecy and Baelish knew things about the wedding that he couldn't know unless it was planned.

Paging @superunknown5 weren't we just asking about this? That it seemed like Martin changed his mind or something?

SU5 doesn't talk much but he's good at remembering everything.

I forgot about Olenna and Baelish plotting against Joffrey.

Are you saying that Joffrey tried to assassinate Bran? I don’t see how that would be since he was essentially a no one that early in the show/books.

I was saying how this is a case of George writing things so that the prose is ambiguous enough and the POVs are distorted/subjective enough that it leaves his options open about the later plot developments because can he always write to the most sort of interesting conclusions and then justify simultaneously retroactively and after the fact by confirming things later on in the story. But it's always based on the emotions, psychology, and motives of the characters in question. Then the answers are usually surprising (because GRRM has many options and choices to play with) and satisfying (because they increase our understandings of the characters which is limited by the POV structure). So GRRM has greater foreknowledge of the characters because he is the gatekeeper of our understanding. Usually this works out, because things are rewritten, polished, and edited to make everything fit the final story. God is in the details, as they say.

The Joffrey dagger thing I think was just an aberration, kind of flimsy but kind of logical at the same time, an unusual mistake. Like you said, just a poorly written subplot in sea of other minor subplots. George would never admit this of course, but he did admit that making the assassin (a common footpad) wield a Valyrian Steel dagger was a weird choice, given his later establishing Valyrian Steel weapons as being quite rare and valuable. It doesn't really make sense for any highborn to hire a common cutthroat and then arm them with a VS dagger as a murder weapon and GRRM said he wishes he hadn't. Like with what we know about VS Cat grabbing the blade with her bare hands seems a stretch, like it should of just sheared her fingers off quite easily from her trying to grasp and squeeze the blade. But of course you could also say it was a magical event a sort of super human feat of motherhood and magic and adrenaline and desperation, or that the blade was shaped just such that she could grab it, yada yada.

And Joffrey overheard Robert saying killing Bran would be a mercy, and seeking the desperate validation of his not dad used his fancy Lannister gold dragons to hire a not so impressive thug to sneak into Bran's room with a dagger he swiped from his daddy's armory when no one was looking, boom plot works, kinda wonky, whatever, I got 6 more books to not finish lol. #DealWithIt

And Olenna and Littlefinger poisoned Joffrey, I thought that was pretty straight forward.

Also I hate to be the bearer of bad news, but pretty sure Tyrion's a Targaryen. Might be wrong, but I don't think so. If I was a betting man, I'd put my dragons on this one.
silentmajority ,Wraith ,voice ,Mojo ,

I was saying how this is a case of George writing things so that the prose is ambiguous enough and the POVs are distorted/subjective enough that it leaves his options open about the later plot developments because can he always write to the most sort of interesting conclusions and then justify simultaneously retroactively and after the fact by confirming things later on in the story. But it's always based on the emotions, psychology, and motives of the characters in question. Then the answers are usually surprising (because GRRM has many options and choices to play with) and satisfying (because they increase our understandings of the characters which is limited by the POV structure). So GRRM has greater foreknowledge of the characters because he is the gatekeeper of our understanding. Usually this works out, because things are rewritten, polished, and edited to make everything fit the final story. God is in the details, as they say.

The Joffrey dagger thing I think was just an aberration, kind of flimsy but kind of logical at the same time, an unusual mistake. Like you said, just a poorly written subplot in sea of other minor subplots. George would never admit this of course, but he did admit that making the assassin (a common footpad) wield a Valyrian Steel dagger was a weird choice, given his later establishing Valyrian Steel weapons as being quite rare and valuable. It doesn't really make sense for any highborn to hire a common cutthroat and then arm them with a VS dagger as a murder weapon and GRRM said he wishes he hadn't. Like with what we know about VS Cat grabbing the blade with her bare hands seems a stretch, like it should of just sheared her fingers off quite easily from her trying to grasp and squeeze the blade. But of course you could also say it was a magical event a sort of super human feat of motherhood and magic and adrenaline and desperation, or that the blade was shaped just such that she could grab it, yada yada.

And Joffrey overheard Robert saying killing Bran would be a mercy, and seeking the desperate validation of his not dad used his fancy Lannister gold dragons to hire a not so impressive thug to sneak into Bran's room with a dagger he swiped from his daddy's armory when no one was looking, boom plot works, kinda wonky, whatever, I got 6 more books to not finish lol. #DealWithIt

And Olenna and Littlefinger poisoned Joffrey, I thought that was pretty straight forward.

Also I hate to be the bearer of bad news, but pretty sure Tyrion's a Targaryen. Might be wrong, but I don't think so. If I was a betting man, I'd put my dragons on this one.
silentmajority ,Wraith ,voice ,Mojo ,