Unless this incredible person descending from the heavens became a Sage and established a lineage of Sages or something.
From this perspective, it seems like Mother Dragon doesn't even need this title to prove her prowess. Even if she didn't have this connection, with her absolute strength, invincible below Sages, and able to exchange blows with those above, she would eventually become a Prince.
Well, royalty doesn't define itself by bloodline, but bloodlines become distinguished because of royalty. That's pretty much the gist of it.
However, such a grand outlook is obviously not something everyone can have; the vast majority of ordinary witches take the lineage inheritance, especially the honor attached to it, very seriously.
Even for an extraordinary being like Mother Dragon, in the end, she couldn't escape the pressure to marry and leave an heir for the family. That's why she borrowed Adam's seed to give birth to Dorothy, which has become a duty and obligation.
