4. Meera Reed is Jon’s twin sister.
Yes, you read it correctly. There’s quite a popular theory that Meera, who accompanied Bran in his adventure beyond the wall and safely returned him back, is not just Jon’s sister, but his twin sister. The series showed us what happened the day Jon was born through Bran’s visions. What’s interesting is that Ned Stark wasn’t the only one who was there.
Howland Reed, Meera’s father, arrived at the Tower of Joy with him. Lyanna had a tough time giving birth and fans suspect that she could have had 2 children. Since Ned’s returning with “bastard” twins would be too much, they think that Ned took one baby, and Howland — the other one.
Another thing that fans just can’t get over is the fact that Jon and Meera are very much alike. She looks way more like him than her brother Jojen, and in the books, she was described very similar to Arya and Lyanna Stark.