We know that how a horcrux create (you have to divide your soul by kill someone, than hide the part of your soul by a dark spell in a special object).
It is very dark and dangerous magic
The two who have known to create horcrux
1.Herpo the foul.
2.Lord Voldemort.
1.Herpo the foul
Herpo the foul in known as
First dark wizard who have created horcrux he was also known as the Parselmouth any way he have created one horcrux that are unknown
2.Lord Voldemort
He is...