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A theory projected on a video, which speculates on the identity of parents of a popular "Game of Thrones" character, John Snow – also referred throughout the series as 'Ned Stark's bastard' – has gone viral, triggering interests from all the fans of the action-packed series, from across the globe.

In a video titled "R + L = J: Who are Jon Snow's parents?" a fan, who has stressed that it is only his theory and not a spoiler for the upcoming season, speculates on who the mother of Snow might be, also going a step forward by saying that Eddard Stark (Ned) may not be his father after all.

"Is my mother alive? Does she know who I am..does she care?" Snow asks Ned in the first season before Ned departs to serve as the king's hand in the capital, in the first season. His farewell words to his 'bastard' son only add to the suspense of who his real mother might be. "The next time we see each other, we'll talk about your mother, I promise."

In fact, guessing the identity of Snow's mother was actually a test given to co-creators of the series, David Benioff and D.B. Weiss by its author George R.R. Marin, when his books was initially going to be adapted into a show.

Many fans believe that the answer they gave was Lyanna Stark, Ned's sister. 

So is it going to be another Jaime/Cersei situation in the same show? Well don't worry – according to the theory thrown in, Ned is in fact, not even the father of Jon. Instead, Rhaegar Targaryen is.

If we take a flash back to the first season, it is revealed in the very beginning that, Rhaegar, the son of King Aerys II Targaryen abducted Lyanna Stark, forcing her fiancé Robert Baratheon, along with Stark, to go to war, kill Rhaegar and become king.

Lyanna sadly died in the meantime, and Ned went home to Winterfell, after fighting the war alongside Robert, with a dead sister and a new baby. Now, the theory goes, that Ned deliberately claimed Jon to be his own bastard in order to protect him from Robert (who was angry with the Targaryens) and the Lannisters.

Here is the video that gives a detailed analysis of the theory: