Warning: this could spoil the entire show for you. So if you don't want a shocker, then you should skip this post. Basically, this is the theory of R + L = J. There's even a video below here to show you the basics. It also makes sense, and it could most likely be true. George R.R. Martin even said the Internet was about right on one of the many theories. Could it be this one?

Reddit user Dirty_Nikhil went and broke down the reasons why Ned Stark's sons are named what they are:

I’ve searched for this theory over the boards and, while the connection has been made, I think a very key aspect of Jon’s naming has been overlooked.
So, all of Ned Stark’s sons are named after someone very important to him….

Robb Stark = Robert Baratheon (best friend)
Jon Snow = Jon Arryn
Bran Stark = Brandon Stark (brother)
Rickard Stark = Rickon Stark (father)

Why Jon Arryn? Ned’s relationship to Arryn parallels the relationship he feels with Snow. Jon Arryn raised Ned like a son even though he was not. Furthermore, when the king (Aerys) called for Ned’s head, Lord Arryn raised his banners in rebellion and defied the king to save him. No doubt Ned is defying Robert by hiding the Targaryen’s claim to the throne.

Watch the video below:

Does this make sense?