As Uproxxreports, according to some fans proficient in lip-reading, Lyanna whispers the name "Jaehaerys" to Ned in the scene.
The Reddit post - which is allegedly based on an interview with actor Ian Hempstead Wright (who plays psychic "warg" Bram Stark) that will be featured in an upcoming issue of Empire - confirms a long-raging fan theory about Jon Snow's true parentage. Fans assumed they would have to wait a while before learning Jon Snow's real name, but thanks to an eagle-eyed Reddit user, it looks like we have learned the truth earlier than we expected. He ruled in tandem with his queen and love, Alysanne, who was dubbed "the Good".
If his real name is Jaehaerys it could be very telling for the outcome of the story. But if it is true, the name Jaehaerys could be another sign that Jon is the legendary Prince That Was Promised, a figure in an ancient prophesy who is supposed to "deliver the world from darkness". That is why he took/seduced Lyanna in the first place. It's believed that Snow, along with Daenerys and Tyrion, will help fulfill the "dragon has three heads" prophecy.
Ned Stark had a history of naming his children after people in his life that were important to him - Robb is named after Robert Baratheon, Bran is named after Ned's brother Brandon as well as other famous Brandons throughout Stark history, and Rickon was named after Ned's father, Rickard Stark. That would actually make him Jaehaerys III as there were two previous to him. While the baby was not *really em *Game of Thrones Season 6 finale, "The Winds of Winter", Lyanna gave birth to a boy, and Ned took him away for safety.
Jaehaerys II was the father of the Mad King, Aerys Targaryen.
To be clear, that name is still unofficial because HBO and Martin himself haven't confirmed it to be true...yet. If you wish to remain as pure as the driven Jon Snow, then do not proceed past this point. Follow INSIDER on Facebook.