
Rhaegar Targaryenโs shadow looms large over the Game of Thrones series. Characters such as Cersei and Jaime Lannister, Robert Baratheon, and Ned Stark all look back on the events before Robertโs Rebellion with mixed feelings about him. Robert despises him, Cersei idealizes him as a prince charming, Jaime remembers betraying Rhaegarโs father, and Ned carries the secret about Rhaegar and the Tower of Joy to his grave.
By the time of the seriesโ main events, Rhaegar is more myth than man. His personality is consistent between accounts of him and all of them mention the drastic shift in attitude he has after he becomes convinced that he has to carry out some great prophecy.
Who Was Rhaegar Targaryen?
โIt was said that no man ever knew Prince Rhaegar, truly. I had the privilege of seeing him in tourney, though, and often heard him play his harp with its silver strings.โ
A Storm of Swords – Daenerys I
Rhaegar Targaryen was a former heir to the Iron Throne. Heโs tied to the main events of Game of Thrones not only by Robertโs Rebellion but by his relationships to Daenerys Targaryen (his sister) and Jon Snow (his son). Rhaegar was the heir of King Aerys II Targaryen a.k.a Mad King Aerys with Queen Rhaella Targaryen.

Aerysโ cruelty towards common people and members of great houses alike made him hated throughout the realm and his court. This hatred made Aerys more paranoid since he was always anxious about being assassinated and usurped. His paranoia made him even crueler towards the Westerosi nobility, ironically making it likelier for him to be deposed.
Rhaegar was the only reason people held out for so long. The young prince was known for his gracious manners, keen intellect, and prowess in battle. People hoped he would take over from his father.
As a young boy, Rhaegar was reserved and bookish. He would spend most of his time reading and talking to maesters. He also had a gift for music which is why heโs often remembered fighting in his black and red Targaryen armor or with singing as he played the harp.ย
Rhaegar was as close to a storybook prince as there was in A Song of Ice and Fire, but he was as mysterious as he was legendary. No one truly understood what Rhaegarโs motivations are and why he had suddenly changed from a passive, bookish boy to a man who made it his business to learn everything to do with combat and ruling.
How Rhaegar Targaryenโs Obsession With Prophecy Drove Westeros to War and Ended the Targaryen Dynasty
โYet when the jousting began, the day belonged to Rhaegar Targaryen. The crown prince wore the armor he would die in — a gleaming black plate with the three-headed dragon of his House wrought in rubies on the breast. A plume of scarlet silk streamed behind him when he rode, and it seemed no lance could touch him.โ
A Game of Thrones – Eddard XVย
People would have toughed out Mad King Aerysโ reign if Rhaegar didnโt die, but Rhaegar Targaryenโs obsession with a prophecy regarding the Prince Who Was Promised ultimately drove Westeros to war. In his quest to complete the โheads of the dragonโ, he sought out Lyanna Stark.

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Lyanna was Nedโs sister and a young teenage girl at a time when Rhaegar already had two children by Princess Elia Martell of Dorne. With Elia, Rhaegar sired a son named Aegon and a daughter named Rhaenys. Daenerys notes that there had been no Visensya so maybe Aegon had hoped for Lyanna to give him his Visenya. We also know that Elia had trouble conceiving and giving birth, which may be why Rhaegar needed Lyanna. Thereโs also the matter of Lyannaโs personality.

Ned points out in the books that Robert Baratheon knew little about Lyanna and didnโt know how fierce-spirited she really was. He even compares her to Arya. In ASOIAF the Targaryen dynasty began with Aegon, Visenya, and Rhaenys. Three heads of the dragon. Visenya was said to have been the coldest of the three siblings and was rumored to have dark magical abilities to the point that fans suspect she killed her sisterโs son, Aenys.
Lyannaโs personality and, as disgusting as this might sound, youth compared to Elia could have made her the ideal mother of Rhaegarโs Visenya. Instead, he got another Aegon, Jon Snow.
The damage was done.ย

Rhaegar kept Lyanna and Jon safe at the Tower of Joy while he went off to the Trident to fight Robert Baratheon. It was there that Robert crushed his body into his black iron and ruby-encrusted armor, ending his life. With Rhaegar gone, there was nothing holding back the plots against Mad King Aerys. Jaime Lannister eventually kills him, earning the name Kingslayer.
Viserys was a child at the time and Daenerys was newly born, making her the only sister of Rhaegar Targaryen. But her birth was too late to make her Rhaegarโs sister-wife. Viserys and Daenerys fled from Dragonstone following the death of King Aerys. In Essos, they lived with anyone who would host them until they lost their wealth, partly because of servants stealing from them. You know the story from there and what happens to the two siblings, but the point is Rhaegar kicks off a string of events that wrecks the Targaryen dynasty.ย
Itโs Not the First Time the Targaryens Have Been Obsessed With Prophecies
Rhaegar Targaryenโs obsession with the Prince Who Was Promised and the three heads of the dragon kicked off a rebellion that ruined the Targaryen family and left its remaining living members scattered throughout the world of ice and fire. He wasnโt the first Targaryen to be obsessed with prophecy. As weโve seen in the books and shows, Targaryens are sometimes blessed with the ability to see the future called โdragon dreamsโ.
House Targaryenโs known dreamers that could see the future include Daenys the Dreamer, Aegon the Conqueror, Helaena Targaryen, and to a lesser extent, Daenerys Targaryen.
Daenys the Dreamer
Daenys was the legendary daughter of Lord Aenar Targaryen, the head of House Targaryen at the time of the Doom of Valyria. Daenys had a dream about the Doom of Valyria and urged her father Aenar to leave the Valyrian Freehold for Dragonstone immediately. Sheโs the writer of a lost book called Signs and Portents where itโs said she wrote the rest of her prophecies.
Aegon the Conqueror

Itโs revealed in House of the Dragon that Aegon the Conqueror had a dream about the white walkers coming to Westeros and destroying all life in the world. Viserys (First of His Name, not Daenerysโ brother) tells Rhaenyra this is why he decides to conquer and unite Westeros. Aegonโs Conquest results in a long, bloody campaign that ends the lines of notable houses such as House Gardner who used to rule the Reach with House Tyrell as their servants.
Viserys Targaryen
Viserys Targaryenโs obsession with a dream he had about a boy with the Conquerorโs name seating the Iron Throne results in the tragic, and ultimately pointless, death of his wife Aemma and a ruined relationship with his daughter, Rhaenyra Targaryen. Rhaenyra is clearly hurt by the fact that her mother died trying to birth the son her father always wanted โ the son she could never be.ย

It causes another big problem later on. On his deathbed, Viserys talks about Aegon the Conqueror/Aegon a.k.a Jon and the Song of Ice and Fire prophecy. Alicent, who has no idea what in the Seven Kingdoms heโs talking about, assumes that Viserys wants their son, also named Aegon, to be king. This cements Alicentโs view that Aegon should seat the Iron Throne instead of Rhaenyra, kicking off โ you guessed it โ the Dance of Dragons.
Helaena Targaryen
Helaena Targaryen is seen murmuring strange phrases in House of the Dragon about spools of green and black thread (referring to the Black and Green factions) and how Aemond will โhave to close an eyeโ before he gets Balerion. She even predicts the arrival of Rhaenys and her dragon Meleys the Red Queen.
Daenerys Targaryen
Daenerys Targaryen has prophetic dragon dreams in A Song of Ice and Fire before her wedding. She dreams of dragon eggs hatching for her and her thighs covered in blood โ as if to symbolize she would metaphorically birth them hence her โMother of Dragonsโ title.
As we later learn in both House of the Dragon and Game of Thrones, prophecy can be treacherous and turn quickly on the one trying to interpret it. Rhaegar Targaryenโs obsession with prophecy brought House Targaryen to ruin and weโre about to see how the realm will bleed because of Viserysโ obsession with having a son in House of the Dragon.