Tom Riddle's mother and a descendant of Salazar Slytherin
My mother died just after I was born, sir. They told me at the orphanage she lived just long enough to name me: Tom after my father, Marvolo after my grandfather
Tom Marvolo Riddle
‘My daughter – pure-blooded descendant of Salazar Slytherin – hankering after a filthy, dirt-veined Muggle?’
Harry Potter and the Half-Blood Prince
By J.K. Rowling
Merope was left alone in London, expecting the baby who would one day become Lord Voldemort.