However,
In A Feast for Crows, she is sent South aboard a ship to Oldtown with Samwell, ostensibly with her child; in truth Jon Snow swapped her child with that of Mance Rayder, to spare the innocent child from Melisandre's flames on account of his king's blood.
Sam, affectionately known as Little Sam, is the son of Craster, a wildling who married his daughters, and Gilly, one of his many daughters-wives, hence making Sam a product of incest. He was named after Samwell Tarly, who saved the lives of Gilly and her son.
In the books, Gilly left her son at Castle Black. The baby she carries is Mance Rayder's son, as Jon forced her to switch the babies, fearing that Melisandre will sacrifice Mance's son for his king's blood.
The baby becomes a White Walker. After being told by Morag that the baby will be a sacrifice for "the gods", Karl orders Rast to leave the baby in the woods for the White Walkers to seize him.
However, Jon Snow, the new Lord Commander of the Night's Watch, has swapped Gilly's son with Dalla's. This is done to spare the innocent child from Melisandre's flames on account of his king's blood, leaving Gilly's son at the Wall.
Game of Thrones season 2 shockingly revealed that the Wilding Craster gave up his male children — born of incestuous relationships with his own daughters — as sacrifices to the Walkers in exchange for relative peace in the Haunted Forest.
Sam and Gilly do have sex in the books, and it is after the death of Aemon.
Jon must have known this, and sent the old maester, as well as Dalla's boy, to save them from the Red Woman's fires. Gilly then says that she will name the boy Aemon Steelsong once he reaches the age of two. Below decks, Sam and Gilly have sex, although he is consumed by guilt for forsaking his vows.
Following the Great War, Samwell was legally released from his Night's Watch vows by King Gendry Baratheon and gained the newly-vacant seat of Highgarden. She went on to marry Samwell shortly before giving birth to a son by him, which they named Jon Tarly, named for Jon Snow.
She spared her because Gilly had an infant and wasn't posing a direct threat to anyone else.
Speculations On Why The White Walkers Let Sam Live
One popular belief was that Sam was spared to serve as a messenger to the living. Since Sam saw firsthand the enormity of the White Walkers' undead army, he could spread the truth — which would result in more fear.
Their relationship continues in season four, though they spend most of it away from each other. Sam, concerned for Gilly and Little Sam's safety, moves them to nearby Mole's Hill. Gilly hates it, and they don't reunite until the Battle of Castle Black between the Night's Watch and the Wildlings.
Once a man of the Night's Watch who dreamed of being a wizard and was mocked as a self-named coward, Sam survived the whole series and lived out his days serving King Bran. We can assume he and Gilly eventually married, but they nonetheless became a family.
Gilly. Gilly and little Sam both survived the wights' terrifying assault on the Winterfell crypts. Hopefully Sam can take some much-needed comfort in the fact that his family lived through the night even if some of his friends didn't.
Sam Tarly and Gilly are expecting another baby, and they revealed the news to close friend Jon Snow in the sweetest way. After surviving the Battle of Winterfell in Episode 3, Sam and Gilly have more to celebrate than just making it out alive.
Sam lost his virginity after defending Gilly from being attacked. Our heads are spinning. Last week Sansa thought she was going to lose her virginity to her new husband, then got brutally raped. Now Gilly thought she was going to get gang-raped, yet helps Sam lose his virginity instead.
At the time of the War of the Five Kings, Craster has nineteen wives, including Gilly. When the Night's Watch encounters her, Gilly is pregnant with the incestuous child of her own father. Gilly is named after the gillyflower.
In the fourth book, Sam is sent by Jon to the Citadel at Oldtown and becomes accepted as a novice trainee supervised by Archmaester Marvyn and acolyte Alleras.
No, the Tarlys do not automatically become Lords of Highgarden (capital of the Reach), nor are they likely to take on that role any time soon.
This means that Samwell Tarly could actually be the true heir of the Iron Throne. However, Samwell Tarly does not have the iconic hair and eyes of a Targaryen. But Jon Snow's existence already proves that not all Targaryen's have the same features.
His studies discovered a mountain of dragonglass underneath Dragonstone. They were also instrumental in his ability to cure Jorah Mormont of his greyscale disease. Samwell has demonstrated that he's a crucial source of game-changing information.
She said some people believe Night's King was a Bolton, a Magnar of Skagos, an Umber, a Flint, a Norrey, or a Woodfoot. However, she identifies Night's King as a Stark of Winterfell and brother to the King of Winter and suggests his name was Brandon.
In Season 8, Bran reveals that the Night King wants to destroy him because he holds all of the history of man.
First many suggested that Daemon Targaryen was the Night King. Then there was a stir around King Viserys being a White Walker. Now that those theories were shut down, a new theory regarding Aemond Targaryen as the Night King has surfaced.