Slytherin's Snake King Severus Snape thought that his tragic life would end in the Shrieking Shack, but he didn't expect that he would appear thousands of years ago by some strange combination of circumstances.
There he met the ancestors who founded the potion family Prince a thousand years ago, the Malfoy ancestor who liked to cry, Godric Gryffindor who looked like a knight but not a wizard, and the one who would be feared by future generations.
The Snake Ancestor - Salazar Slytherin.
Conception: