In the three centuries from Aegon the Conqueror to Aegon "the artist formerly known as Jon Snow ", there are nine Aegons in House Targaryen , of course this is standard practice for royal names (British people have stuck with Edward and Henry's names for centuries).
In Dragon House 8 "Lord of the Tides", House Targaryen has an irreversible oolong incident, before King Viserys dies, he admits the wrong person he is talking to, and due to multiple Aegon In a situation where others misunderstood who he was talking about, the misunderstanding would prove disastrous for the kingdom.
In six years, the condition of King Viserys I has deteriorated considerably. By episode eight he was bedridden, had lost an eye, and was in constant pain. The pain was relieved by treatment with "poppy milk" (a Westerosian opiate, the equivalent of morphine), and it left him sometimes delirious and distracted. At the end of the episode - Viserys struggles to attend the dinner party he hopes will bridge the gap between the Greens and the Black, when Princess Rhaenyra arrives at his bedside after arriving from Dragonstone, Viserys initially Mistaking her for wife Allison would be a huge mistake.
Back in the first episode of "The Dragon's Heir," Viserys lets Rhaenyra know the secrets of the royal family -- their ancestor Aegon the Conqueror had a prophetic dream.
The White Walkers
He named it "A Song of Ice and Fire". It is predicted that an unusually cold winter will come, and (the White Walkers) will destroy the world of the living, and all Westeros must unite in rebellion, under the leadership of a king or queen of Targaryen blood. Rise up this power - "strong enough to unite the kingdom against cold and darkness", and that king or queen is the "promised king". Aegon the Conqueror's "song" is magically embedded in the blade of the Valyrian steel dagger worn by Viserys, which was also at his bedside in the final moments of his life.
In episode eight, Rhaenyra comes to ask Viserys to protect his grandson (through their "father" Ser Rano Valerian, whose uncle is vying for the inheritance). Rhaenyra also admitted that she doubted her ability to succeed her father's throne, asking Viserys if she believed that Aegon the Conqueror's dream was real and that she would make it happen. Viserys answered her question, but it was too late, and "Poppy Milk" confused him into thinking it was Queen Allison, speaking to the wrong person.
Queen Allison did not know the Targaryen prophecy known only to the royal heir, and when he heard Viserys talking to Rhaenyra, he did not understand Viserys' words: "He said yes, he Believe that Aegon's song is true, yes, she will be the one who unites the power of the kingdom against the coming darkness. The promised king, it is you, you are the only one, and you must do it." Allison only heard the words "Aegon", "Prince" and "You must do this" and understood them to mean that Viserys wanted their child Aegon to inherit the Iron Throne.
"I see, my king" Queen Allison wrongly believed that King Viserys' last wish was for Prince Aegon to be crowned ruler of the Seven Kingdoms. Of course, Viserys' dying wish was for Princess Rhaenyra to take the throne. After Viserys worked hard to unite his clan and inspire them to forget about past quarrels, these words made subsequent events go awry again.
Viserys is free from the pain, but the situation he leaves behind is not peaceful. The newly repaired bond between Allison and Rhaenyra is about to break, and a dance of blood dragons is about to unfold. . .
