It is known that Harry is a descendant of Ignotus Peverell (The brother that received the Invisibility Cloak), and Voldemort is descended from Cadmus Peverell (The brother that received the Resurrection Stone). So it's not too far-fetched to think that Snape could also be a descendant of one of the brothers.
Well, the House of Gaunt are descendants of both the Peverell and Slytherin family, specifically of Cadmus Peverell and Salazar Slytherin. Marvolo Gaunt was the father of Merope Gaunt and Tom Riddle/Lord Voldemort's grandfather, which is why Voldemort acquired the ring/resurrection stone and turned it into a horcrux.
Harry and Voldemort are both descendants of the Peverell brothers, the youngest and middle brother respectively, to be specific. Harry inheriting Ignotus' Cloak of Invisibility and Voldemort “acquiring” Cadmus' Resurrection Stone from his mother's brother are proof of that.
Snape is the second brother, Cadmus Peverell, who crafted the Resurrection Stone. The tale says the second brother asked for the power to recall the deceased from the grave – but he couldn't cope with having the woman he loved back only as a ghost and killed himself.
It's an indirect connection, not a direct blood connection. The Peverells never claimed to be related to Slytherin, nor anything else, because none of them are ever quoted as saying anything directly. The Gaunts claimed to be Slyther.
The Deathly Hallows Explained: Creation to Ultimate Fate (+Why Harry Didn't Die In the Forest)
Who is the descendant of Godric Gryffindor?
Godric Gryffindor is the only founder who is not mentioned to have any descendants, although for a time it was speculated that Harry Potter himself was a descendant of Gryffindor either through James Potter possibly because James hailed from Godric's hometown, or possibly through a line of Muggles descended from a ...
In 1943, Tom Riddle, the "Heir of Slytherin", opened the Chamber of Secrets to conduct a purge on Muggle-born students. This resulted in the death of Myrtle Warren, who eventually returned as a ghost. Riddle opened the Chamber again in 1993 through the use of one of his seven Horcruxes, his diary.
Rolf followed his grandfather's footsteps and became a magizoologist himself, eventually falling in love with Luna. This makes Luna Lovegood the great-daughter-in-law of both Newt and Tina Scamander, further cementing another prestige family lineage in the Harry Potter canon.
Did the Peverell brothers create the Unforgivable Curses?
Looking into the possibilities suggests that it probably wasn't the brothers. Reasons for doubt: The Killing curse is described as being created in the early Middle Ages- which covers the period 500 -1500 AD. The Peverell brothers lived in the mid 1200's- so in the late Middle Ages.
As Sirius explains in OoTP, pureblood families are often related to each other by marriage. Voldemort was the descendant of the second brother, Cadmus Peverell, whereas Harry descended from the third brother, Ignotus Peverell. But Dumbledore wasn't related to any of these, as far as we know.
Voldemort lost his physical form and magical powers, but he remained alive in ghostly form. The Horcruxes he had created kept his spirit bound to the physical world.
Harry's aunt and uncle kept the truth about his parents' deaths from Harry, telling him that they had died in a car crash. James Potter is a descendant of Ignotus Peverell, the third of the three original owners of the Deathly Hallows, and thus so is Harry, a realisation he makes during the course of the final book.
Mason Riddle is the Son of Tom Marvalo Riddle, otherwise known as Lord Voldemort, and the only American student at Hogwarts School of Witchcraft and Wizardry.
The Killing Curse was created in the early Middle Ages by Dark witches and wizards. Primarily, the curse was used to quickly slay opponents during a duel. In 1707, the Wizards' Council was restructured into the Ministry of Magic, which allowed for more strict restrictions on certain types of magic.
There is likely a good reason that the Sectumsempra is not an unforgivable curse. It's mostly because Sectumsempra is Snape's personal curse that he created. It is not a widely known or used spell, and it is one that he kept secret — which means it can't be added to the list since no one really knows about it.
Shortly before the Battle of Hogwarts, Harry not only successfully used the Cruciatus Curse against Amycus Carrow, he also cast the Imperius Curse against two individuals during the Gringotts heist which led to Harry, Hermione, and Ron getting in the vault.
Leta actress Zoë Kravitz was quoted as saying she played Bellatrix's great-great-aunt. However, there's little evidence for that. Born as Bellatrix Black, Bellatrix married into the Lestrange family, meaning she and Leta aren't related by blood.
J.K. Rowling hinted that the characters belonged to the same family in a tweet, which read: 'Well, I think it's widely known that that characters of (Porpen)tina and Queenie are sisters, but not that their surname is Goldstein.
Under the influence of her father, Dolores grew up despising her mother and brother for their lack of magical abilities. She was sorted into Slytherin House at Hogwarts School of Witchcraft and Wizardry and hated her time at the school due to never being given any positions of power.
Salazar Slytherin built the Chamber of Secrets to preserve his pure-blooded legacy and only his true heir could open it and control the monster within. The true heir of Slytherin is revealed to be Tom Riddle, also known as Lord Voldemort, who had a direct bloodline connection to Slytherin through the Gaunt family.
In his third year at Hogwarts, Hagrid was caught talking to Aragog in the dungeons by Tom Riddle, who alleged that Aragog was the "Monster of Slytherin", and that Hagrid had opened the Chamber of Secrets. In fact, it was Riddle who had opened the Chamber, and the monster was actually a basilisk.
Her real parents were Daneel and Dean Novak, Pureblooded wizards. Turns out Daneel was Tom Riddles younger sister, Daneel Riddle. Of course, the Riddles were related to Salzar Slytherin himself, and this made Hermione the living heir of Slytherin.
