[MagicHef]

There are a lot of "inconsistencies" in a lot of the backstories that are revealed to the readers, and I think a lot of them will turn out to be significant, especially as GRRM loves to use the unreliable narrator:

-Everyone thinks Jon is Ned's son. This doesn't seem to be the case.

-Dany remembers a lemon tree outside her childhood home, which she has been told was in Braavos. However, we are told by other characters that lemons don't grow in Braavos.

-Jeor tells Jon that Longclaw (Valyrian bastard sword) was a Mormont ancestral weapon that he gave to Jorah, and Jorah left it behind when he fled for Essos. However, Jorah seems to be unaware of this, not even mentioning this when Dany tells him that she will get him a Valyrian sword for his service. Also, it is somewhat odd that such an insignificant house would have such a weapon. Coincidentally, the only other Valyrian bastard sword ever mentioned, Blackfyre (Targaryen ancestral sword) disappeared right around the same time Bloodraven joined the Night's Watch.