Lyanna Stark

"That's Lyanna, my father's sister. King Robert was supposed to marry her, but Rhaegar Targaryen kidnapped her. Robert started a war to win her back. He killed Rhaegar, but she died anyway."

- Bran Stark at Lyanna's tomb

Lyanna Stark is a character in Game of Thrones. She is deceased when the events of the series begin, yet she appears in flashback form in the sixth season. Lyanna Stark is the younger sister of major character Eddard Stark. Her kidnapping by Prince Rhaegar Targaryen contributed to the outbreak of Robert's Rebellion. She died near the very end of the rebellion, but the exact circumstances surrounding her death are shrouded in mystery.

It's revealed in The Winds of Winter that her death was caused by complications from childbirth, as she gave birth to a baby boy, revealed to be Jon Snow. Before she passed away, she asked Ned to promise her to keep her son safe, in fear of Robert's wrath should he find out the truth of Jon's parentage.

Background
Lyanna Stark was the only daughter of Lord Rickard Stark, head of House Stark and Lord Paramount of the North. The North is one of the constituent regions of the Seven Kingdoms and House Stark is one of the Great Houses of the realm. House Stark rule the region from their seat of Winterfell and Rickard also held the title Lord of Winterfell.

Lyanna had three brothers, Brandon, Eddard and Benjen Stark. Her father arranged a betrothal between her and Robert Baratheon, Lord of Storm's End and Lord Paramount of the Stormlands.

Time after the betrothal, Lord Walter Whent organized a great tourney at Harrenhal, in which Prince Rhaegar Targaryen, the heir to the Iron Throne, was the victor. Afterwards, the Prince rode past his wife, Princess Elia Martell, and placed a crown of winter roses, the crown of the Queen of Love and Beauty, on Lyanna's lap. This action was considered an outrage because not only was Rhaegar married but Lyanna already betrothed to another man.

At some point after these events, Lyanna was abducted for by Rhaegar, who took her south and hid her away in Dorne. Brandon, who had been on his way to Riverrun to wed Catelyn Tully, instead went to King's Landing to demand Rhaegar's arrest and punishment. King Aerys II Targaryen had him and all his companions charged with treason. He demanded all their fathers, including Lord Rickard Stark, come to King's Landing and promised they would receive a fair trial. Instead the King had them all burned alive, except for Brandon who strangled himself trying to save his father.

This incident sparked the uprising known as Robert's Rebellion. Jon Arryn was commanded to arrest and turn over his wards Robert Baratheon and Eddard Stark but he refused. The three of them rose in rebellion along with Hoster Tully of Riverrun after Eddard and Jon married his daughters, Catelyn and Lysa. The war saw House Targaryen almost completely destroyed and Robert installed as king after he personally slew Rhaegar at the Battle of the Trident. During the war Lyanna died from unknown causes in Eddard's arms, after her rescue. As per her request, she was buried next to her brother Brandon in the crypts at Winterfell. Robert continued to mourn her despite becoming king and marrying Cersei Lannister. Though Eddard was angered at Robert for refusing to hold Tywin Lannister and his army accountable for the Sack of King's Landing, their friendship was rekindled over the mutual grief for Lyanna.

Season 1
King Robert Baratheon visits Lyanna's tomb under Winterfell almost immediately after arriving. As part of their romance, he would bring her feathers from an exotic southern bird. During this visit, he places one in the hand of her statue. Robert says the statue doesn't do her justice. He becomes emotional and tells Eddard how he relives killing Rhaegar Targaryen again and again in his dreams for what he did to Lyanna. He asks Eddard if it was necessary to bury Lyanna in a cold tomb rather than somewhere in the sunlight, but Eddard responds that she was of the North and of House Stark; this is her place.

In King's Landing, Robert shares a drink with his wife, Cersei Lannister, and they begin to talk about Lyanna Stark for the first time in their marriage. Robert tells her how much Lyanna meant to him, even though now he cannot even remember her face, saying she was the only thing he ever wanted but then someone took her away from him, and even the entire Seven Kingdoms couldn't fill the hole she left. Cersei reminds him that she once had feelings for him, which he acknowledges. She asks if there had ever been even a moment when he had loved her but Robert says no. He asks her if that makes her feel better or worse. Cersei replies it doesn't make her feel anything.

When Eddard discovers that Cersei has been having an incestuous affair with her twin brother Jaime, he confronts her. Cersei denies Eddard's accusation that she always hated Robert, saying she once worshipped him back when she was young and handsome and muscular. All the girls wanted him, and he was hers by oath. But then that love turned to hate on their wedding night when he came to bed drunk, and afterwards muttered Lyanna's name in her ear.

Bran Stark shows Osha the tombs under Winterfell and gives a quick summary of the events leading to the civil war: how Rhaegar kidnapped Lyanna, who was betrothed to Robert Baratheon, and the Mad King then killed Lyanna's brother and father, triggering the war.

Season 4
When speaking to Tyrion Lannister, Oberyn Martell expresses anger that, despite Elia Martell's love and loyalty for her husband Rhaegar Targaryen, he left her for "another woman," Lyanna Stark.

Season 5
Sansa Stark, upon returning to Winterfell after being gone for four years, visits her aunt's statue and lights a candle in the statue's hand to honor Lyanna as her father used to do. Petyr Baelish finds her there. They discuss what happened at the Tourney of Harrenhal where Rhaegar Targaryen shocked everyone present by passing over his wife Elia Martell in order to crown Lyanna as the Queen of Love and Beauty. Sansa notes how Rhaegar later kidnapped and raped Lyanna, while Petyr said his choices led to the deaths of thousands.

Season 6
While exploring his Greensight under the tutelage of the three-eyed raven, Bran Stark views an event from his father's past, and sees Lyanna showing off her riding skills in front of her brothers, Eddard and Benjen. She later encourages a young Benjen to fight a bout against the young stablehand Wylis, giving Wylis tips on how to beat her brother.

In yet another vision, Bran witnesses another event, this time during the aftermath of Robert's Rebellion, in which Ned Stark, accompanied by five bannermen including Howland Reed, confront Ser Arthur Dayne and Ser Gerold Hightower of the Kingsguard before the Tower of Joy, in the Red Mountains of Dorne. Before the fight ensues, Ned demands to know where Lyanna is. Accepting his role as the Three Eyed Raven, Bran travels back in time to the Tower of Joy event. Bran watches as his young father reunites with the dying Lyanna. While Ned demands the hand maidens to aid his sister, Lyanna stops him and whispers to him about the whole ordeal. It's revealed that Lyanna gave birth to a baby boy and asks Ned to promise her to keep her son safe, in fear of Robert's wrath. Ned complies with Lyanna's wish and holds his newborn nephew who will later be known as Jon Snow.

Appearances

 * Bran's vision

Quotes
"We were meant to rule together. If your sister had lived, we would have been bound by blood."

- Robert Baratheon to Ned Stark about his sister Lyanna.

"Do you want to know the horrible truth? I can't even remember what she looked like. All I know is that she was the one thing I ever wanted. Someone took her from me, and Seven Kingdoms couldn't fill the hole she left behind."

- Robert Baratheon to Cersei Lannister about Lyanna.

"Elia loved Rhaegar. She obeyed him. And he chose to steal away Lyanna Stark, a pale Northern girl whose veins ran with ice, like all her people."

- Oberyn Martell

In the books
In the A Song of Ice and Fire novels, Lyanna does appear, albeit only in flashbacks and visions. She is described as intelligent, tomboyish and willful, frequently compared to her niece Arya in terms of temperament and appearance. When Robert says that Lyanna would never have opposed him vehemently as Cersei does, Ned notes that Robert either overlooked or had forgotten Lyanna's iron will. It is also implied she was not as passionate about her betrothal as Robert was. She knew about Robert's philandering ways and felt his love for her wouldn't stop him from sleeping with other women. When Rhaegar Targaryen won the great tourney at Harrenhal, he crowned her the Queen of Love and Beauty over his own wife, an action that stunned all present. A year later, Rhaegar kidnapped her which led to Robert's Rebellion. During the war she was hidden at a remote location and defended by three members of the ​Kingsguard, whom Eddard and his retainers had to kill. Only Eddard and Howland Reed, a vassal of House Stark, survived. However, she died from unknown causes before they could successfully rescue her.

Lyanna's death instilled in Robert a great hatred of the Targaryens, and he vowed not to rest until every last scion of the house was killed, though Eddard refused to let Lyanna's tragic death skew his views on justice and mercy.