Queen Naerys—the one woman Aegon IV bedded in whom he took no pleasure—was pious and gentle and frail, and all these things the king misliked. Childbirth also proved a trial to Naerys, for she was small and delicate. When Prince Daeron was born on the last day of 153 AC, Grand Maester Alford warned that another pregnancy might kill her. Naerys was said to address her brother thus: “I have done my duty by you, and given you an heir. I beg you, let us live henceforth as brother and sister.” We are told that Aegon replied: “That is what we are doing.” Aegon continued to insist his sister perform her wifely duties for the rest of her life.
I wanted to ask a question about something you've talked about before: You pointed out that Stannis is the only character who has referred to Sansa as "Lady Lannister." Something feels off about that. He knows what the small council and the Lannisters are like, and he knows the union was forced to try to take Winterfell through marriage. Granted, Jon does think to himself that if Stannis found Arya, he might marry her off to one of his men, but still, for such a just man, that's pretty unfair.