As Viserys lay dying he uttered his last words to whom he believed to be Rhaenyra, his daughter, but instead was his wife Alicent:
"Aegon, his Dream. The Song of Ice and Fi -- It is true. What he saw in the North. The Prince That Was Promised. From my blood come the Prince That Was Promised and his will be the Song of Ice and Fire. The Prince, to unite the realm against the cold... and the dark. It is you. You are the one. You must do this."
Alicent automatically believes that it is their son, Aegon II that he is referring to although there are a couple reasons that is not the case:
- When Viserys first says the name Aegon, Alicent asks to clarify, "Our son?" Viserys shakes his head to indicate that is not what he meant.
- Viserys mentions, "What he saw in the North." Aegon II had never been known to have gone to the north so, that would be impossible.
- Viserys mentions, "his Dream." While The Song of Ice and Fire is a House Targaryen family secret. Prophetic dreams are not something that seems to be confidential. The dream of Daenys foreseeing the end of Valyria is well known, as well as other Targaryen 'dreamers', as they are written in the histories. However Aegon II has not mentioned to have prophetic dreams, to his mother or anyone else.
So with these clarifiers why did Alicent believe it was their son, Aegon II that Viserys was referring to on his deathbed?