I think the really interesting thing is that as a modern reader , you want to say Rhaenyra ' s claim is strongest because she ' s the oldest . But looking at the minimal descriptions we have of the law in Westeros . her claim was always dodgy . Viserys was breaking the rules to declare his daughter and not his brother heir . If we look at Daemon ' s character , Viserys ' desire to keep him out of government wasn ' t a bad thing . Daemon was an arsehole . He would have been a terrible king . But then Rhaenyra didn ' t turn out to be so good either . Nor did Aegon II . <| sep |> Genders aren ' t ' official . ' There ' s no list of the only accepted things to call yourself . Does it really make a difference in your life if someone chooses to use word x for their identity instead of word y ?