Martin seems to love killing Starks off. Ned's father and brother were tortured to death by the mad King. Ned was executed. Benjen appears to be dead. Robb and Cat were killed at the Red Wedding. And Jon? Well, we'll have to see.
I'm hoping the subplot with the Onion Knight and Rickon will lead to the latter ultimately becoming Lord of Winterfell. I think Bran and Jon's destinies lie elsewhere.