Coincidentally, Harry Potter, Hermione Granger, and Ron Weasley are each of the three distinct types of wizards; Harry being a half-blood, Hermione being a Muggle-born, and Ron being a pure-blood.
The pure-blood wizards and witches featured in the Harry Potter books are almost all supremacists, while there are some of them who do not advocate ancestral superiority; the Potters, Weasleys, and Longbottoms are old pure-blood families, but no known members of these families are sympathetic to supremacist aims.
Also, James Potter was a pure-blood. One possible theory indicates that the author of the Directory considered the Potters and other "pure-blood" families (such as the Princes, the Crabbes, the Goyles, the Moodys, and the Browns) to have some amount of Muggle ancestry.
For example, Harry Potter is technically pureblood, because both of his parents are wizards. But on the grandparents level, he is half-blood, because both of his maternal grandparents are muggles.
History of the Sacred 28 (All PURE Blood Families) - Harry Potter Explained
What is Draco Malfoy's blood status?
Draco Lucius Malfoy (b. 5 June 1980) was a British pure-blood wizard and the only son of Lucius and Narcissa Malfoy (née Black). The son of a Death Eater, Draco was raised to strongly believe in the importance of blood purity. He looked down on half-bloods and Muggle-borns.
Neville is a pure-blood wizard born to Frank and Alice Longbottom, who were prominent Aurors and also members of the Order of the Phoenix during the first war against Lord Voldemort.
An interesting fact of note is that despite the ideals that pure-bloods are inherently more powerful wizards, some of the most powerful or particularly adept wizards and witches in the series are in fact either half-blood (such as Lord Voldemort, Albus Dumbledore, Minerva McGonagall, Severus Snape and Harry Potter) or ...
Dumbledore was the surname of an English wizarding family, famous for the achievements or notoriety of various members, particularly Albus Dumbledore. The family had both magical and Muggle heritage.
It is not impossible if a muggleborn witch/wizard have the traits and values of Sytherin, and Slytherin doesn't mean they only accept purebloods but also halfbloods and that halfbloods are really talented and great like Snape he is a potion master and Umbridge also she was a Slytherin.
Who is the richest pureblood family in Harry Potter?
The Malfoy family comes from a long line of rich witches and wizards within Harry Potter, and Lucius Malfoy has copious amounts of money at his disposal. He resides in a gigantic mansion with his family, named Malfoy Manor, and owns some of Harry Potter's most powerful objects, including a golden Time-Turner.
Muggle-born Slytherins existed, but were very rare, as noted insultingly by Scabior the Snatcher. There had also been definite examples of half-bloods sorted into the house, including Tom Riddle, Dolores Umbridge, and Severus Snape.
McGonagall was born a half-blood witch as her father was a Muggle and her mother a witch. McGonagall began her Hogwarts education at the age of eleven and was sorted into Gryffindor after being the longest ever Hatstall between Gryffindor and Ravenclaw.
Astoria Malfoy (née Greengrass) (c. 1982 – August 2019) was a British pure-blood witch and a member of the Greengrass family, one of the Sacred Twenty-Eight.
Despite being a pure-blood, he didn't believe that he was superior to other witches, wizards and Muggles. He had a lot going for him and his well-placed morals were even more impressive if you think about the start that he had in life. Sirius came from a family of pure-blood fanatics.
Harry describes Umbridge to Sirius Black, saying that she's vile enough to be a Death Eater, despite not being one. Umbridge is also depicted to be a prejudiced person, despising half-breeds and Muggle-born witches and wizards to the point of firing Hagrid due to his half-giant birth status.
He could be a pureblood or a halfblood. His mother was a breeder of Hippogriffs, which lead to his interest in magical creatures. He couldn't have been a Muggle-born, because he had Horklumps in his bedroom at age seven.
Family. Snape's family background is mostly shown in flashbacks during the course of the last three novels. Snape was born to Eileen Prince, a witch, and Tobias Snape, a Muggle, making him a half-blood (hence the name, "Half-Blood Prince").
Harry is a half-blood because his mother was born to a Muggle family while his father was born to a Wizarding couple. It doesn't matter what social standing someone manages to achieve or inherit to those who made the definition. Tonks is a halfblood despite being descended from the Black family on her mother's side.
Bellatrix was born in 1951 to Cygnus Black III and Druella Rosier, who gave her a rich lifestyle and raised her to be proud of her pure-blood heritage. She was the elder sister of Andromeda and Narcissa Black.
Slytherin was the surname of a pure-blood wizarding family with several notable members, particularly Salazar Slytherin. Salazar was one of the four co-founders of Hogwarts School of Witchcraft and Wizardry and the founder of Slytherin house. He lived in the 10th century.
The Malfoys were a pure-blood wizarding family who were one of the Sacred Twenty-Eight - a list of pure-blood wizarding families published in the 1930s. Known for being aligned with the Dark Arts, the Malfoys had a history with Voldemort, with Lucius Malfoy being a Death Eater in You-Know-Who's innermost circle.
