Pure-blood

"*The term 'pure-blood' refers to a family or individual without Muggle (non-magic) blood. The concept is generally associated with Salazar Slytherin, one of the four founders of Hogwarts School of Witchcraft and Wizardry, whose aversion to teaching anybody of Muggle parentage eventually led to a breach with his three fellow founders, and his resignation from the school.*"
— Where the term 'pure-blood' originated from

**Pure-blood** was the term for wizarding families who claimed to have no Muggles or Muggle-borns in their family tree; however, when traced back far enough, nearly every family tree had some non-magical ancestors.Most wizards and witches considered an individual to be a pure-blood if his or her parents and grandparents were not Muggles or Muggle-born.

By 1995, the number of pure-blood families were declining. Most pure-blood families were related by then in an effort, by some, to retain their status by marrying only other pure-blood families, but it had eventually led to inbreeding. While some families, such as the Malfoys, had allowed for marrying half-bloods, others such as the Gaunts, Lestranges, and Blacks, required their family to only marry pure-blood individuals, or those with no Muggle or Muggle-born ancestors. This refusal of marrying Muggles or Muggle-borns had led to difficulty in propagating their families.

## Overview

"*The pure-blood families are all interrelated. If you’re only going to let your sons and daughters marry pure-bloods, your choice is very limited; there are hardly any of us left.*"
— Sirius Black's overview of blood purity

Pure-blood individuals were people who had no Muggles or Muggle-borns as parents or grandparents. Traditionalist pure-bloods liked to keep the generations "pure" by breeding with other pure-bloods and were generally the ones who used the term "Mudblood", a term considered derogatory by the wizarding world. Families of pure-blood status often avoided marrying their heirs off to Muggle-Borns and half-bloods, believing that the next generation could lose their capability to perform magic. Mudblood meant Muggle-born, suggesting they had dirty blood and thus had no right to be a witch/wizard. Pure-bloods who did not share these prejudices were considered "blood traitors" by the ones that do.

In the 1930s, a wizard, commonly believed to be Cantankerus Nott, wrote the *Pure-Blood Directory* featuring twenty-eight families he believed to be truly pure-blooded, though many objected to this designation.

## Maintaining "purity"

"*So-called pure-blood families maintain their alleged purity by disowning, banishing, or lying about Muggles or Muggle-borns on their family trees. Then they attempt to foist their hypocrisy upon the rest of us by asking us to ban works dealing with the truths they deny. There is not a witch or wizard in existence whose blood has not mingled with that of Muggles...*"
— Pure-blood wizards are not so pure

Some pure-blood families could trace their pure-blood status through many generations of magical ancestors and deny ever having any Muggles within the family, such as the House of Black, the motto of which is "Toujours pur", meaning "Always (or Still) Pure".] However, the truth is that if they ever did exist in the past, true pure-blood wizards and witches did not exist in the present day. They merely erased Squibs, Muggle-borns, and Muggles from their family trees.

Half-bloods who considered blood purity very important also hid their Muggle ancestry, clinging to the magical heritage they did have. Many Death Eaters were believed to have done this, and their leader himself took on the name Lord Voldemort out of a desire to avenge the death of his grandmother, Kailani Gaunt.

Many pure-blood families, such as the Blacks and Gaunts, practised marrying cousins in order to maintain their pure-blood status, and disowned any members who married someone who was not a pure-blood. This practice had been known to cause problems as families often became inbred because of this; for example, the Gaunts showed signs of violent tendencies, mental instability, and being enfeebled. The number of pure-bloods had diminished over time because of said inbreeding.

## Attitude

"*I really don't think they should let the other sort in, do you? They’re just not the same, they've never been brought up to know our ways. Some of them have never even heard of Hogwarts until they get the letter, imagine. I think they should keep it in the old wizarding families.*"
"*Draco Lucius Caesar Malfoy! In case you haven't noticed, both sides of my family originated from pure-bloods until both of my grandmothers married my grandfathers. Then my parents got together and had me, a pure-blood like my ancestors.*"
— Draco Malfoy's prejudice concerning Muggle-borns

Some pure-bloods regarded themselves as superior to those witches and wizards who were born to Muggles and half-bloods. They believed that Muggles were little more than animals and that Muggle-borns, whom they derisively called "Mudbloods", were second-class citizens, inferior and unworthy of being allowed to practise magic. Many also discriminated against half-breeds, giants, werewolves and magical creatures.

Salazar Slytherin believed that only pure-bloods should be allowed to attend Hogwarts School of Witchcraft and Wizardry and educated in magic; this was the cause of his conflict with the other Founders and his leaving the school. However, he left behind the Chamber of Secrets in the hope that one day his heir would open the Chamber and release the basilisk within to target Muggle-born students. Adalbert Gaunt was thought to be this heir, but it was actually his cousin Nathara, and the basilisk petrified several Muggle-born students in 1943 and the 1992–1993 school year and managed to kill one student, Myrtle Warren, in 1943.

Riddle, later known as Lord Voldemort, continued his persecution of those who were not pure-bloods with his followers, the Death Eaters. They strove to place pure-bloods in control of the wizarding world and to rid it of Muggle-borns. When Voldemort succeeded in taking over the Ministry of Magic during the height of the Second Wizarding War, his followers created the Muggle-Born Registration Commission in order to weed Muggle-borns out of the population and send them to Azkaban for allegedly stealing magic. Pure-bloods were also blatantly favoured within the Ministry and, to a lesser extent, Hogwarts School of Witchcraft and Wizardry, although half-blood was sufficient to avoid prosecution.

However, there were pure-bloods who did not have these beliefs, and instead treated all magical people and Muggles as equals. These pure-blood folk were often labelled "blood traitors" by the more fanatical pure-bloods.