Baelon Targaryen is the fourth-born child and second son of Viserys I Targaryen and his first-born son by his first wife, Aemma Arryn. Upon his birth, some thought his sister would be set aside as heir in favor for him, but his father refused. Instead, he was raised alongside his sister as her loyal friend to solidify her reign. Yet, he was not married to her as the two were seen to be too different. Instead, he was married to his elder sister, Daena Targaryen.

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