Despite such differences, the sons of the Dragon continued to rule together amicably for the best part of two years. But in 39 AC, Queen Alyssa gave King Aenys yet another heir, a girl she named Vaella, who sadly died in the cradle not long after. Perhaps it was this continued proof of the queen’s fertility that drove Prince Maegor to do what he did. Whatever the reason, the prince shocked the realm and the king both when he suddenly announced that Lady Ceryse was barren, and he had therefore taken a second wife in Alys Harroway, daughter of the new Lord of Harrenhal.

The wedding was performed on Dragonstone, under the aegis of the Dowager Queen Visenya. As the castle septon refused to officiate, Maegor and his new bride were joined in a Valyrian rite, “wed by blood and fire.” The marriage took place without the leave, knowledge, or presence of King Aenys. When it became known, the two half-brothers quarreled bitterly. Nor was His Grace alone in his wroth. Manfred Hightower, father of Lady Ceryse, made protest to the king, demanding that Lady Alys be put aside. And in the Starry Sept at Oldtown, the High Septon went even further, denouncing Maegor’s marriage as sin and fornication, and calling the prince’s new bride “this whore of Harroway.” No true son or daughter of the Seven would ever bow to such, he thundered.

Prince Maegor remained defiant. His father had taken both of his sisters to wife, he pointed out; the strictures of the Faith might rule lesser men, but not the blood of the dragon. No words of King Aenys could heal the wound his brother’s words thus opened, and many pious lords throughout the Seven Kingdoms condemned the marriage, and began to speak openly of “Maegor’s Whore.”

   Vexed and angry, King Aenys gave his brother a choice: put Alys Harroway aside and return to Lady Ceryse, or suffer five years of exile. Prince Maegor chose exile. In 40 AC he departed for Pentos, taking Lady Alys, Balerion his dragon, and the sword Blackfyre with him. (It is said that Aenys requested that his brother return Blackfyre, to which Prince Maegor replied, “Your Grace is welcome to try and take her from me.”) Lady Ceryse was left abandoned in King’s Landing.

To replace his brother as Hand, King Aenys turned to Septon Murmison, a pious cleric said to be able to heal the sick by the laying on of hands. (The king had him lay hands on Lady Ceryse’s belly every night, in the hopes that his brother might repent his folly if his lawful wife could be made fertile, but the lady soon grew weary of the nightly ritual and departed King’s Landing for Oldtown, where she rejoined her father in the Hightower.) No doubt His Grace the king hoped the choice would appease the Faith. If so, he was wrong. Septon Murmison could no more heal the realm than he could make Ceryse Hightower fecund. The High Septon continued to thunder, and all through the realm the lords in their halls spoke of the king’s weakness. “How can he rule the Seven Kingdoms when he cannot even rule his brother?” they said.

The king remained oblivious to the discontent in the realm. Peace had returned, his troublesome brother was across the narrow sea, and a great new castle had begun to rise atop Aegon’s High Hill: built all in pale red stone, the king’s new seat would be larger and more lavish than Dragonstone, with massive walls and barbicans and towers capable of withstanding any enemy. The Red Keep, the people of King’s Landing named it. Its building had become the king’s obsession. “My descendants shall rule from here for a thousand years,” His Grace declared. Perhaps thinking of those descendants, in 41 AC Aenys Targaryen made a disastrous blunder and announced his intention to give the hand of his daughter Rhaena in marriage to her brother Aegon, heir to the Iron Throne.

The princess was eighteen, the prince fifteen. They had been close since childhood, playmates when young. Though Aegon had never claimed a dragon of his own, he had ascended into the skies more than once with his sister, on Dreamfyre. Lean and handsome and growing taller every year, Aegon was said by many to be the very image of his grandsire at the same age. Three years of service as a squire had sharpened his prowess with sword and axe, and he was widely regarded as the best young lance in all the realm. Of late, many a young maiden had cast her eye upon the prince, and Aegon was not indifferent to their charms. “If the prince is not wed,” Grand Maester Gawen wrote the Citadel, “His Grace may soon have a bastard grandchild to contend with.”

   Princess Rhaena had many a suitor as well, but unlike her brother she gave encouragement to none of them. She preferred to spend her days with her siblings, her dogs and cats, and her newest favorite, Alayne Royce, daughter to the Lord of Runestone…a plump and homely girl, but so cherished that Rhaena sometimes took her flying on the back of Dreamfyre, just as she did her brother Aegon. More often, though, Rhaena took to the skies by herself. After her sixteenth nameday, the princess declared herself a woman grown, “free to fly where I will.”

And fly she did. Dreamfyre was seen as far away as Harrenhal, Tarth, Runestone, Gulltown. It was whispered (though never proved) that on one of these flights Rhaena surrendered the flower of her maidenhead to a lowborn lover. A hedge knight, one story had it; others named him a singer, a blacksmith’s son, a village septon. In light of these tales, some have suggested that Aenys might have felt a need to see his daughter wed as soon as possible. Regardless of the truth of that surmise, at eighteen Rhaena was certainly of an age to marry, three years older than her mother and father had been when they were wed.

Given the traditions and practices of House Targaryen, a match between his two eldest children must have seemed the obvious course to King Aenys. The affection between Rhaena and Aegon was well-known, and neither raised any objection to the marriage; indeed, there is much to suggest that both had been anticipating just such a partnership since they had first played together in the nurseries of Dragonstone and the Aegonfort.

The storm that greeted the king’s announcement took them all by surprise, though the warning signs had been plain enough for those with the wit to read them. The Faith had condoned, or at the very least ignored, the marriage of the Conqueror and his sisters, but it was not willing to do the same for their grandchildren. From the Starry Sept came a blistering condemnation, denouncing the marriage of brother to sister as an obscenity. Any children born of such a union would be “abominations in the sight of gods and men,” the Father of the Faithful proclaimed, in a declaration that was read by ten thousand septons throughout the Seven Kingdoms.

   Aenys Targaryen was infamous for his indecision, yet here, faced with the fury of the Faith, he stiffened and grew stubborn. The Dowager Queen Visenya advised him that he had but two choices; he must abandon the marriage and find new matches for his son and daughter or mount his dragon, Quicksilver, to fly to Oldtown to burn the Starry Sept down around the High Septon’s head. King Aenys did neither. Instead he simply persisted.

On the day of the wedding, the streets outside the Sept of Remembrance—built atop the Hill of Rhaenys, and named in honor of the Dragon’s fallen queen—were lined with Warrior’s Sons in gleaming silver armor, making note of each of the wedding guests as they passed by, afoot, ahorse, or in litters. The wiser lords, perhaps expecting that, had stayed away.