Few dynasties in the history of fantasy television are as fascinating — and as complicated — as the Targaryens. With their silver hair, violet eyes, and fire-breathing dragons, they ruled the Seven Kingdoms for generations. But ruling was never simple when the bloodline itself became a battlefield.

The House of the Dragon family tree sits at the very heart of the hit HBO series “House of the Dragon”, a prequel to “Game of Thrones” set roughly 200 years earlier. Every war, every betrayal, and every dragon battle in the show can be traced back to a single family and the question of who among them had the right to sit on the Iron Throne.

In this complete guide, we’ll break down the entire Targaryen family tree — from King Viserys I all the way to the next generation of dragonriders — so you can understand exactly who’s fighting whom, and why it matters.

The complete ‘House of the Dragon’ family tree

The Targaryen family tree is unlike any other in fantasy because it is shaped by two defining customs: incest and dragons. For centuries, the Targaryens practised marriage between siblings and close relatives to “keep the bloodline pure” and maintain their bond with dragons.

This made their family tree extraordinarily tangled — cousins married cousins, uncles married nieces, and brothers married sisters.

The roots of the Targaryen dynasty stretch back to the ancient civilisation of Old Valyria, a great empire of dragonlords in the eastern continent of Essos. When Valyria was destroyed in a cataclysmic event known as the Doom, the Targaryens survived because they had already relocated to the island fortress of Dragonstone.

From there, Aegon the Conqueror united the Seven Kingdoms of Westeros over a century before the events of “House of the Dragon”.

By the time our story begins, the Targaryen family has split into two bitter rival branches:

• Team Black — supporters of Princess Rhaenyra Targaryen, the king’s chosen heir
• Team Green — supporters of Queen Alicent Hightower and her son Aegon II

Understanding which characters belong to which branch — and how they’re all related — is the key to following the conflict known as the Dance of the Dragons.

Photo: HBO Max

King Viserys: Targaryen — the root of the conflict

Every branch of the House of the Dragon family tree grows from one man: King Viserys I Targaryen, played memorably by Paddy Considine in Season 1.

A well-meaning but fatally indecisive king, Viserys set the stage for civil war not through cruelty but through a series of choices made out of love, grief, and political naivety.

Aemma Arryn, dedicated mother, noble queen, and betrayed wife. Photo: Ollie Upton / HBO

His first marriage — Aemma Arryn

Viserys’s first wife was Aemma Arryn, a kind and beloved queen who suffered greatly trying to provide the king with a male heir. Their only surviving child was Princess Rhaenyra Targaryen, a fierce and determined young woman who loved dragons as much as she loved her father.

Aemma died in childbirth, delivering a boy named Baelon, who survived only a day. This tragedy not only shattered Viserys emotionally but also forced the question of succession into the open. With no male heir and a daughter he adored, Viserys made a historic decision: he named Rhaenyra his official heir — an almost unheard-of choice in the patriarchal world of Westeros.

Alicent Hightower. Photo: CBS

His second marriage — Alicent Hightower

After Aemma’s death, Viserys was persuaded — partly through political manoeuvring by her father, Ser Otto Hightower, the Hand of the King — to marry Alicent Hightower, Rhaenyra’s own childhood best friend. This marriage produced four children:

• Aegon II Targaryen — the eldest son, who would become Rhaenyra’s chief rival
• Helaena Targaryen — a dreamy, dragon-bonded princess who married her brother Aegon
• Aemond Targaryen — the fearsome one-eyed prince who became one of the war’s most dangerous figures
• Daeron Targaryen — the youngest, serving in the south during the conflict

By having sons with Alicent, Viserys unwittingly created a rival claimant to the throne he had already promised to Rhaenyra. This contradiction, which he refused to resolve before his death, is the single most important cause of the civil war.

Rhaenyra Targaryen em “House of the Dragon” Photo: HBO Max

Rhaenyra Targaryen’s branch — the Blacks

Princess Rhaenyra Targaryen (played as an adult by Emma D’Arcy) is the central figure of the series and the head of what becomes known as “the Blacks” — named for the Targaryen banner of black and red that her supporters fly.

Rhaenyra’s first marriage — Ser Laenor Velaryon

Rhaenyra’s first husband was Ser Laenor Velaryon, son of the powerful Lord Corlys Velaryon and Princess Rhaenys Targaryen. The marriage was politically strategic, uniting the Targaryens with the wealthiest and most powerful naval house in Westeros.

Their three sons — Jacaerys, Lucerys, and Joffrey — became central figures in the war. However, their parentage was a source of explosive controversy. The boys had dark hair and features, unlike the typical silver-haired Targaryens or Velaryons, fuelling widespread rumours that their true father was Ser Harwin Strong, Rhaenyra’s rumoured lover.

This question of legitimacy became a political weapon used relentlessly against Rhaenyra by her enemies.

Rhaenyra’s second marriage — Daemon Targaryen

After Laenor conveniently “disappeared” (he was allowed to fake his death and flee), Rhaenyra married her uncle Daemon Targaryen in a secret ceremony on Dragonstone. Together, they had two sons:

• Aegon the Younger (later Aegon III)
• Viserys II

This marriage united two of the most powerful Targaryen claimants under one roof and made Rhaenyra’s faction militarily formidable. It was also, by the standards of even Westerosi nobility, a scandalous union — Daemon was her uncle, decades her senior, and had a complicated and sometimes violent history.

Daemon Targaryen. Photo: HBO Max

Daemon Targaryen’s full family connections

Daemon Targaryen (Matt Smith) is perhaps the most complex and compelling figure in the entire series. A dragonrider of extraordinary ability and a warrior without equal, he was also impulsive, ruthless, and deeply magnetic. His multiple marriages connect several major branches of the family tree.

Daemon’s first marriage — Lady Rhea Royce

Daemon’s first marriage was to Lady Rhea Royce of Runestone — a match he despised, and she apparently returned in kind. The marriage produced no children and ended under suspicious circumstances that Daemon may have orchestrated.

Daemon’s second marriage — Laena Velaryon

His second wife was Laena Velaryon, daughter of Lord Corlys Velaryon and Princess Rhaenys, and the rider of the fearsome dragon Vhagar — the largest and oldest dragon in the world. Together, they had two daughters:

• Baela Targaryen — a spirited young woman and dragonrider
• Rhaena Targaryen — her quieter sister, who eventually bonded with a dragon of her own

Laena died tragically young, choosing to end her own life on dragonfire rather than perish slowly in a difficult childbirth.

Daemon’s third marriage — Rhaenyra Targaryen

By marrying Rhaenyra, Daemon joined together the two most powerful branches of the Blacks, making the family tree loop back on itself in a typically Targaryen fashion. His daughters from Laena became step-daughters to their half-brothers’ mother — a family dynamic only the Targaryens could create.

The Hightower-Targaryen branch — the Greens

The rival faction, known as “the Greens” after the colour Alicent wore at a key feast, is made up of Alicent Hightower’s children and their descendants. They are backed by powerful lords who believe a woman should not sit on the Iron Throne and that Aegon II has the stronger claim by virtue of his sex.

Aegon II Targaryen

Aegon II is Alicent’s eldest son and the man crowned king by the Greens after Viserys’s death. He is the rider of the golden dragon Sunfyre and presents himself as a king, though he is often shown as dissolute and reluctant.

He was married to his own sister, Helaena, and they had three children: Jaehaerys, Jaehaera, and Maelor — all of whom became pawns or casualties in the war.

Aemond Targaryen

Prince Aemond is arguably the most dangerous member of the Green faction. As a child, he lost his left eye in a confrontation with his nephews and cousins over the dragon Vhagar — a dragon he then claimed for himself, making him one of the most powerful dragonriders alive.

Cold, calculating, and ferociously skilled, Aemond became a devastating weapon for his mother’s cause.

Helaena Targaryen

Princess Helaena is one of the war’s most tragic figures — a gentle, dragon-dreaming woman caught between forces she had no part in creating. Her marriage to Aegon II was political, and her children were used as leverage in the most horrifying ways by both sides.

Daeron Targaryen

The youngest of Alicent’s sons, Daeron, fought in the south of Westeros and emerged in Season 2 as a capable and honourable young dragonrider — arguably the most straightforwardly heroic of the Green siblings, though the war leaves no one truly clean.

The Velaryon connection — Dragonstone’s sea power

No account of the House of the Dragon family tree is complete without the Velaryons — Westeros’s greatest naval power and the Targaryens’ closest Valyrian cousins.

Lord Corlys Velaryon, known as the Sea Snake, and his wife, Princess Rhaenys Targaryen (the Queen Who Never Was), are crucial to the political landscape. Rhaenys herself had a claim to the Iron Throne before Viserys — passed over because of her gender — making her deeply sympathetic to Rhaenyra’s cause.

Their children, Laena and Laenor, married into the Targaryen line, and the Velaryon fleet became the backbone of Rhaenyra’s military power. Without House Velaryon, the Blacks could never have mounted a serious challenge to the Greens.

How the family tree connects to “Game of Thrones”

The “House of the Dragon” family tree doesn’t just explain the show — it explains the entire world of “Game of Thrones” as well. The Dance of the Dragons was a catastrophic war that nearly wiped out both dragons and the Targaryen line entirely.

After the war concluded, Aegon the Younger — Rhaenyra and Daemon’s son — became Aegon III, ruling a kingdom in ruins with no dragons left alive. His descendants continued the Targaryen dynasty for generations, eventually producing Aerys II, the Mad King, whose cruelty sparked Robert’s Rebellion.

That rebellion led to the Targaryen exile, Daenerys growing up across the Narrow Sea, and Jon Snow being born in secret as the son of Rhaegar Targaryen and Lyanna Stark. Every dragon, every throne, and every drop of Targaryen blood in “Game of Thrones” flows from the family tree depicted in “House of the Dragon”.

Key family tree controversies that drive the plot

The drama of “House of the Dragon” isn’t just about dragons — it’s about legitimacy, perception, and power. Several key controversies in the family tree drive the entire conflict:

The parentage of Rhaenyra’s sons is the most explosive. If Jacaerys, Lucerys, and Joffrey are truly the sons of Harwin Strong rather than Laenor Velaryon, then they are bastards — and Rhaenyra’s line of succession collapses. Her enemies never let her forget this, even as she denies it.

Rhaenyra’s designation as heir was unprecedented and deeply resented by lords who believed the crown should pass only through male lines. Her claim was always contested, no matter how clearly Viserys stated his wishes.

The legitimacy question at the heart of the series mirrors real-world medieval succession crises — most notably the Wars of the Roses in England, where two branches of the royal family fought for the throne. George RR Martin drew heavily from this history, and the parallels are unmistakable.

Final words

The “House of the Dragon” family tree is one of the richest, most complicated, and most rewarding puzzles in modern fantasy storytelling. Every marriage, every child, and every disputed birthright carries centuries of consequence — not just for the characters on screen, but for the entire world that “Game of Thrones” built.

Understanding who is related to whom, and how the Blacks and the Greens emerged from a single dysfunctional family, transforms “House of the Dragon” from a spectacular dragon show into a profound story about power, inheritance, and the human cost of dynasties.

Whether you’re new to Westeros or a lifelong fan, we hope this guide has helped you navigate the tangled branches of the Targaryen tree.