Hogwarts A Polygamy

Disclaimer: I am in no way affiliated with Warner Bro. or J.K. Rowling. I'm just a fan who has decided to do a twist on the marriage law. A new marriage law has passed and it's to unite all of Europe's wizarding world together. How're they doing it you may ask? Well, they're pairing up wizards with three witches one of them another country in Europe. Who does he get paired with?