Talk:Princess Luna/@comment-98.214.65.51-20120924220303/@comment-1158325-20120925004741

It could be a dynasty kind of thing, as there have been in Rl history - thus the Pegasus unicorn trait is confined only to that bloodline, and they were indeed born royalty (guaranteed to be the future rulers). But we don't really know their history or that of Equestria very well, and they're several thousand years old at least, so...