Board Thread:TV Show Discussion/@comment-114.71.100.55-20160705071349/@comment-32860540-20170913134245

There is no proof of Jon being a Targaryen other than the word of his best friend, a diary(which people could say was forged), and Bran a crippled boy. The only way for people to think that he's a Targaryen is if he marries Daenerys. The same thing is happening with Young Griff from the books. Besides, who would support Jon's claim to the Iron Throne. Northerners hate the Targaryens and once they find out Jon is a Targaryen, they'll probably make Sansa Queen in the North. In season 7, the lords of the Vale and the North already wanted to make Sansa queen because she's been such a great ruler.