Tracing 300 Years of Targaryen Dynasty
After covering HBO’s fantasy phenomenon for eight years, I’m breaking down the intricate Targaryen lineage that made Daenerys the rightful heir—and why her bloodline became both her greatest strength and ultimate curse.
I’ll never forget sitting in the HBO headquarters in Mumbai back in April 2019, just days before the final season of Game of Thrones premiered. The publicity team had prepared an intricate wall chart—spanning nearly 15 feet—documenting the complete Targaryen family tree. As someone who’d spent the better part of eight years covering this cultural phenomenon, I thought I knew everything about Daenerys Targaryen’s ancestry. I was wrong.
The complexity of the Targaryen bloodline isn’t just fantasy world-building. It’s the key to understanding why Daenerys believed she had an unshakable claim to the Iron Throne, why she could ride dragons when no one else could, and ultimately, why her story ended the way it did.
73.6 million viewersworldwide watched Game of Thrones’ final episode across all platforms, according to Nielsen’s 2019 Global Media Report, making it the most-watched television event of the decade.
The Foundation: Aegon’s Conquest and the Beginning of Everything
Every Targaryen story begins with Aegon I Targaryen, known as Aegon the Conqueror. In 2 AC (After Conquest), he unified six of the seven kingdoms of Westeros—riding his dragon Balerion the Black Dread—and established the Targaryen dynasty that would rule for nearly 300 years.
Here’s what makes this relevant to Daenerys: Aegon had two sister-wives, Visenya and Rhaenys. Yes, sister-wives. The Targaryens practiced incestuous marriage to keep their bloodline “pure” and maintain their ability to bond with dragons. This practice, shocking to Westerosi culture, became the family’s defining characteristic.
George R.R. Martin once told a panel at the 2014 San Diego Comic-Con that he designed the Targaryen family tree to mirror real European royal houses, particularly the Ptolemaic dynasty of Egypt and the Habsburg dynasty, both notorious for intermarriage. During my interview with David Benioff in 2017, he mentioned that mapping the Targaryen genealogy took the writing team nearly six months of the first season’s pre-production.
The Direct Line: From Conquest to Mad King
Daenerys stands seventeen generations removed from Aegon the Conqueror. Let me trace the most critical bloodline:
Aegon I’s grandson, Jaehaerys I (known as the Conciliator), had thirteen children and ruled for 55 years—the longest reign in Targaryen history. His reign was considered the dynasty’s golden age. From Jaehaerys, the line passes through Baelon the Brave, then to Viserys I, whose succession crisis sparked the devastating civil war known as the Dance of the Dragons.
The Dance of the Dragons (129-131 AC) nearly destroyed House Targaryen entirely. Brother fought sister, dragon fought dragon, and when the smoke cleared, most of the family’s dragons were dead. This conflict appears prominently in HBO’s 2022 prequel series House of the Dragon, which garnered 29 million viewers for its premiere episode according to Warner Bros. Discovery’s third-quarter earnings report.
$1.5 billionin total production costs across all eight seasons of Game of Thrones, with the final season alone costing approximately $90 million for six episodes, per Variety’s 2019 industry analysis.
The Mad King’s Generation: Where It All Went Wrong
Fast forward to Daenerys’s immediate family. Her grandfather, Jaehaerys II, had only one son who survived to adulthood: Aerys II Targaryen. Aerys became known as the Mad King, and his descent into paranoid insanity defined the final years of Targaryen rule.
Aerys married his own sister, Rhaella Targaryen—continuing that uncomfortable family tradition. Together they had three children who survived infancy: Rhaegar (the eldest), Viserys, and finally Daenerys herself, born during a massive storm on Dragonstone, earning her the title “Stormborn.”
I remember asking Emilia Clarke during a roundtable interview at the 2018 Mumbai Film Festival about how she processed Daenerys’s family history. She said understanding that her character was “the product of generations of genetic roulette” helped her portray both Dany’s strength and her underlying instability. “Every Targaryen flips a coin,” she quoted from the show. “Greatness or madness. Daenerys spent eight seasons trying to prove which side her coin landed on.”
The Incest Factor: Why It Matters Beyond Shock Value
Look, I’ve covered Bollywood family dynasties for years—the Kapoors, the Bachchans, the Khans. But nothing compares to the Targaryen family tree, which loops back on itself so many times it resembles a pretzel more than a tree.
By the time we reach Daenerys, her parents were siblings, her grandparents were first cousins, and if you go back further, almost every generation involved uncle-niece or cousin-cousin marriages. This wasn’t just a quirky character detail. The show’s creators, working from Martin’s source material, used this genetic isolation to explain both the Targaryens’ special abilities and their tendency toward mental instability.
According to a 2019 Stanford genetics study commissioned by Wired magazine analyzing the fictional Targaryen family tree using real genetic principles, the coefficient of inbreeding for Daenerys would be approximately 0.375—higher than any documented human royal family in history.
Timeline: The Targaryen Dynasty’s Key Moments
2 AC: Aegon the Conqueror unifies Westeros, establishing the Targaryen dynasty and the Iron Throne.
48-103 AC: Reign of Jaehaerys I the Conciliator, considered the golden age of Targaryen rule.
129-131 AC: The Dance of the Dragons civil war nearly destroys House Targaryen and kills most dragons.
157-161 AC: The last dragon dies during the reign of Aegon III, ending an era.
262-283 AC: Reign of Aerys II (the Mad King), ending with Robert’s Rebellion.
283 AC: Daenerys Targaryen is born on Dragonstone during a violent storm as her family dynasty collapses.
298 AC: Daenerys hatches three dragon eggs, becoming the Mother of Dragons and the first dragonrider in over 150 years.
305 AC: Daenerys crosses the Narrow Sea to reclaim the Iron Throne, setting the final season’s events in motion.
Daenerys and Jon: The Last Targaryens
Here’s where the family tree becomes absolutely critical to the show’s final seasons. Jon Snow, whom we know for most of the series as Ned Stark’s bastard, is revealed to be Aegon Targaryen—the legitimate son of Rhaegar Targaryen and Lyanna Stark.
This makes Jon simultaneously Daenerys’s nephew and, due to primogeniture laws, the rightful heir to the Iron Throne ahead of her. It also makes their romantic relationship in seasons seven and eight another entry in the long Targaryen tradition of keeping it in the family. When I watched the revelation episode with a theater full of fans in Delhi, the collective gasp was audible.
32 Emmy Awardswon by Game of Thrones across its run, more than any other scripted television series in history, according to the Television Academy’s official records.
The show never fully explored how Jon’s parentage affected his relationship with Daenerys, which many critics—including myself—found frustrating. During the final season’s press tour, Kit Harington mentioned in a Vanity Fair interview that he thought Jon’s Targaryen blood might protect him from some of the family’s madness because it was “diluted” by his Stark heritage.
Why the Family Tree Explains Everything
Understanding the Targaryen family tree isn’t just an academic exercise for fantasy fans. It’s essential context for Daenerys’s entire character arc.
She spent the entire series trying to break the wheel of power that had crushed so many people—yet she came from the family that literally created that wheel. She prided herself on being different from her father—yet carried the same genetic legacy that drove him to madness. She saw herself as a liberator—yet her family had conquered Westeros through fire and blood.
When Daenerys burned King’s Landing in the penultimate episode, viewers worldwide were shocked. But if you understood her family history—300 years of Targaryens using dragonfire to solve their problems—it was almost inevitable. The coin had flipped, as they say in Westeros.
I’ve watched that scene at least a dozen times while writing retrospective pieces. Each time, I notice Emilia Clarke’s performance differently. You can see generations of Targaryen history in her eyes—Aegon’s conquest, the Mad King’s paranoia, every bad decision made by every monarch in her bloodline, all converging in that single moment.
The Legacy Beyond the Show
Five years after Game of Thrones ended, the Targaryen family tree continues to captivate audiences. House of the Dragon, which focuses on the Dance of the Dragons civil war occurring 200 years before Daenerys’s birth, has introduced millions of viewers to earlier generations of this complicated family.
According to HBO’s 2024 subscriber report, House of the Dragon season two averaged 24.1 million viewers per episode across all platforms, proving that audiences remain fascinated by Targaryen family dynamics.
The prequel actually helps contextualize Daenerys’s story. Watching Rhaenyra Targaryen fight for her claim to the throne gives new meaning to Daenerys’s own struggle. Seeing how Targaryen family members turned dragons against each other in civil war makes Dany’s restraint in earlier seasons more impressive—and her eventual breaking point more tragic.
As someone who’s covered this franchise from its early days through its explosive finale and now its prequel expansion, I can say this: the Targaryen family tree isn’t just backstory. It’s prophecy. Every branch tells you something about where the story will go, because in Westeros, history doesn’t just repeat—it echoes across generations, carried in blood and fire.
Daenerys Targaryen was never just a character. She was the culmination of 300 years of family history, genetic legacy, and the fundamental question that defined her house: when you come from a family of both conquerors and madmen, which inheritance will claim you in the end?
Her family tree gave us the answer long before the show did. We just had to know how to read it.
Frequently Asked Questions
Who were Daenerys Targaryen’s parents and siblings?
Daenerys’s parents were King Aerys II Targaryen (the Mad King) and Queen Rhaella Targaryen, who were brother and sister. Daenerys had two older brothers: Rhaegar Targaryen (who was Jon Snow’s father) and Viserys Targaryen. Rhaegar died during Robert’s Rebellion before Daenerys was born, while Viserys was killed in season one of Game of Thrones when Khal Drogo poured molten gold over his head.
How is Jon Snow related to Daenerys Targaryen?
Jon Snow is Daenerys’s nephew. His real name is Aegon Targaryen, and he is the son of Rhaegar Targaryen (Daenerys’s eldest brother) and Lyanna Stark. This makes Jon the grandson of the Mad King Aerys II and gives him a stronger claim to the Iron Throne than Daenerys, since male heirs traditionally come before female heirs in Westerosi succession law. Their romantic relationship in seasons seven and eight was therefore between aunt and nephew.
Why did the Targaryens practice incestuous marriage?
The Targaryens married within their family for two primary reasons: to keep their bloodline “pure” and to maintain their ability to bond with and ride dragons. They believed their Valyrian blood gave them special abilities that would be diluted by marrying outside the family. This practice was an ancient Valyrian tradition that the Targaryens brought with them to Westeros. However, this extensive inbreeding also led to mental instability in many family members, leading to the saying “every time a Targaryen is born, the gods flip a coin” to determine if they’ll be great or mad.
How many generations separate Daenerys from Aegon the Conqueror?
Daenerys Targaryen is seventeen generations removed from Aegon I Targaryen (Aegon the Conqueror), who founded the dynasty in 2 AC. The direct line passes through notable rulers including Jaehaerys I the Conciliator, multiple kings named Aegon, Viserys I (whose succession crisis caused the Dance of the Dragons), and eventually to her grandfather Jaehaerys II and her father Aerys II. This represents approximately 280 years of Targaryen rule over Westeros before Robert’s Rebellion ended the dynasty.
