The Emperor's Son-in-Law

A commandery prince's consort is someone who marries a prince's daughter!

A princess's consort is someone who marries the emperor's daughter!

But what do you call someone who marries the daughters of both the emperor and the princes?

Overthrowing a country and founding a new one is called establishing a dynasty!

But what do you call overthrowing a whole bunch of countries and founding a whole bunch of new ones?

Li Tang kept pondering this question.