Half-blood Harry Potter is the son of a pure-blood wizard and a Muggle-born witch

"Most wizards these days are half-blood anyway. If we hadn’t married Muggles we’d’ve died out."
— Half-blood statistic and blood purity[src]

Half-blood was the term commonly given to wizards and witches who had known Muggle or Muggle-born parents or grandparents. By the 1990s, half-bloods were the most common type of magical person, as the pure-blood wizarding population would have become extinct had they not inter-married with Muggles and Muggle-borns.[1][2]


It should be noted that any wizard who is neither Pure-blood nor Muggle-born is considered a Half-blood, even if they have two wizard parents; they need not have exactly half-Muggle/half-wizard heritage.

Non-magical children born with at least one magical parent are considered Squibs by the wizarding community rather than Half-bloods or Muggles.[3] Examples include Martha Steward II, Dolores Umbridge's brother, and Gilderoy Lockhart's two sisters. Because of their Muggle parentage, many end up assimilating into the Muggle population as they would have more trouble thriving within the magical community.

Magical children born to a muggle-born and a muggle are considered half-bloods, such as Penny and Beatrice Haywood.


"You dare speak his name with your unworthy lips, you dare besmirch it with your half-blood's tongue, you dare... He dared — he dares — he stands there — filthy half-blood — "
— Prejudice against Harry Potter's half-blood status from Bellatrix Lestrange[src]

Harry Potter and his children are half-bloods with known Muggle ancestry

Those who believe in the importance of blood purity consider half-bloods to be inferior because of their Muggle heritage, though superior to Muggle-borns. As such, some families such as the Malfoys allowed them to marry into their pure-blood family and could do so without affecting their family's pure-blood status.[4]

Other more fanatical families such as the Gaunts, Lestranges, and Blacks, require all marriages to be those of Pure-blood.[4][5] Members of these families are more likely to use "half-blood" in a derogatory manner, similar to the epithet "Mudblood"; Bellatrix Lestrange did so on multiple occasions,[6] and the portrait of Walburga Black often equated half-bloods with Half-breeds.[7]

Some half-bloods expressed prejudice towards those with Muggle heritage, despite having some themselves, and clung to what wizarding heritage they had. Notably Lord Voldemort persecuted Muggles and Muggle-borns, despite the fact that his mother (Merope Gaunt) was a pure-blood witch and his father (Tom Riddle Snr) was a Muggle. He denied his Muggle heritage, instead emphasising his wizard ancestors; his legend-entitled nickname was "Heir of Slytherin" because his most notable wizard ancestor (Salazar Slytherin) was a famous pure-blood champion, which made himself more believable.[2] Severus Snape may be another example; his self-entitled nickname was "Half-Blood Prince" because his mother (Eileen Prince) was a pure-blood witch and his father (Tobias Snape) was a Muggle. However, Remus Lupin reported that he never used the nickname openly. This, as well as Snape's membership in the Death Eaters, suggests he may have been ashamed of his Muggle heritage, at least in his early life.[8] In fact, these people, along with some other Death Eaters, pretend to be pure-bloods, hiding their Muggle heritage from anyone else.[9] Ironically (or perhaps because of), regarding the prophecy concerning his defeat, Voldemort chose to go after the half-blood Harry Potter instead of the pure-blood Neville Longbottom.

When the Ministry of Magic fell under Voldemort's control in 1997, Muggle-borns were openly persecuted and pure-bloods were favoured above all else. Half-bloods were still accepted at Hogwarts School of Witchcraft and Wizardry and in the British Ministry of Magic, but were not treated as well as the pure-blood members.[10][11]


Magical/Squib & Muggle

Wizard(s) Magical/Squib parent Muggle parent
Seamus Finnigan Mrs Finnigan Mr Finnigan
Beatrice Haywood[12] Mother (Muggle-born)[13] Father[14]
Penny Haywood[12]
Gilderoy Herbert Lockhart[15] Mrs Lockhart(pure-blood or half-blood) Mr Lockhart
Remus John Lupin[16][17] Lyall Lupin (pure-blood or half-blood) Hope Howell
Mafalda Pure-blood wizard/Squib father Mother
Minerva Isobel McGonagall[18] Isobel Ross (pure-blood or half-blood) Robert McGonagall
Malcolm McGonagall
Robert McGonagall Jr
Tom Marvolo Riddle[19] Merope Gaunt (pure-blood) Tom Riddle Senior
Severus Tobias Kalovan Snape[20] Eileen Prince (pure-blood) Tobias Snape
Rionach Steward[21] Isolt Sayre (pure-blood) James Steward
Dean Thomas Father Mrs Thomas
Sybill Patricia Trelawney[22] Mr Trelawney (pure-blood or half-blood) Mrs Trelawney
Celestina Warbeck[23] Mr Warbeck Mrs Warbeck
Dolores Jane Umbridge[24] Orford Umbridge (pure-blood) Ellen Cracknell
Bowman Wright Mrs Wright Mr Wright

Pure/half-blood & Muggle-born

Wizard(s) Pure/half-blood parent Muggle-born parent
Alfred Cattermole Reginald Cattermole Mary Cattermole
Ellie Cattermole
Maisie Cattermole
Cresswell brothers Mrs Cresswell Dirk Cresswell
Albus Percival Wulfric Brian Dumbledore Percival Dumbledore Kendra Dumbledore
Aberforth Dumbledore
Ariana Dumbledore
Garrick Ollivander[25][26] Gervaise Ollivander (pure-blood)[26] Mrs Ollivander[26]
Harry James Potter James Potter (pure-blood) Lily Evans
Nymphadora Tonks Andromeda Black (pure-blood) Edward Tonks
Hugo Granger-Weasley Ronald Weasley (pure-blood) Hermione Granger
Rose Granger-Weasley

Both half-bloods

Wizard(s) Parents
Edward Remus Lupin Remus Lupin
Nymphadora Tonks

Muggle or Muggle-born grandparent

Wizard(s) Pure-blood parent Parent with Muggle or Muggle-born parent
Albus Severus Potter Ginny Weasley Harry Potter (Muggle-born mother)
James Sirius Potter
Lily Luna Potter
Delphini Bellatrix Lestrange Tom Riddle (Muggle father)

Unknown status

Wizard(s) Ancestor
Hannah Abbott At least one known Muggle parent or grandparent
Susan Bones
Millicent Bulstrode
Mundungus Fletcher
Porpentina Goldstein At least one known Muggle or Muggle-born grandparent[27]
Queenie Goldstein
Quirinus Quirrell At least one known Muggle ancestor[28]

Behind the scenes

  • On J. K. Rowling's draft list of students in Harry Potter's class, which is not considered canon due to several contradictions with the novels, the following students were mentioned as half-bloods:[29]


See also

Notes and references

  1. FAQ at J. K. Rowling's official site - "The expressions 'pure-blood', 'half-blood' and 'Muggle-born' have been coined by people to whom these distinctions matter, and express their originators' prejudices. As far as somebody like Lucius Malfoy is concerned, for instance, a Muggle-born is as 'bad' as a Muggle. Therefore Harry would be considered only 'half' wizard, because of his mother's grandparents. If you think this is far-fetched, look at some of the real charts the Nazis used to show what constituted 'Aryan' or 'Jewish' blood. I saw one in the Holocaust Museum in Washington when I had already devised the 'pure-blood', 'half-blood' and 'Muggle-born' definitions, and was chilled to see that the Nazis used precisely the same warped logic as the Death Eaters. A single Jewish grandparent 'polluted' the blood, according to their propaganda."
  2. 2.0 2.1 Harry Potter and the Chamber of Secrets, Chapter 7 (Mudbloods And Murmurs) - Ron: "Most wizards these days are half-blood any-way. If we hadn’t married Muggles we’d’ve died out.”"
  3. Squibs" at J. K. Rowling's official site
  4. 4.0 4.1 Writing by J.K. Rowling: "The Malfoy Family" at Pottermore - "From the imposition of the Statute of Secrecy onwards, no Malfoy has married a Muggle or Muggle-born. The family has, however, eschewed the somewhat dangerous practise of inter-marrying within such a small pool of pure-bloods that they become enfeebled or unstable, unlike a small minority of fanatic families such as the Gaunts and Lestranges, and many a half-blood appears on the Malfoy family tree."
  5. Harry Potter and the Half-Blood Prince, Chapter 10 (The House of Gaunt) - Marvolo Gaunt: "Centuries it’s been in our family, that’s how far back we go, and pure-blood all the way!"
  6. Harry Potter and the Order of the Phoenix, Chapter 35 (Beyond the Veil)
  7. Harry Potter and the Order of the Phoenix
  8. Harry Potter and the Half-Blood Prince
  9. Harry Potter and the Half-Blood Prince, Chapter 12 (Silver and Opals) - " "“The Death Eaters can’t all be pure-blood, there aren’t enough pure-blood wizards left,” said Hermione stubbornly. “I expect most of them are half-bloods pretending to be pure. It’s only Muggle-borns they hate, they’d be quite happy to let you and Ron join up.”""
  10. Harry Potter and the Deathly Hallows, Chapter 29 (The Lost Diadem) - Neville: "They don’t want to spill too much pure blood, so they’ll torture us a bit if we’re mouthy but they won’t actually kill us."
  11. Harry Potter and the Deathly Hallows, Chapter 13 (The Muggle-Born Registration Commission) - "“No, no, I’m half-blood, I’m half-blood, I tell you! My father was a wizard, he was, look him up, Arkie Alderton, he’s a well-known broomstick designer, look him up, I tell you — get your hands off me, get your hands off —”"
  12. 12.0 12.1 Harry Potter: Hogwarts Mystery, Year 3, Side Quest "Penny for Your Thoughts"
  13. Harry Potter: Hogwarts Mystery, Year 5 Defence Against the Dark Arts
  14. Harry Potter: Hogwarts Mystery, Year 5, Chapter 3 (Detention Before Extension) - History of Magic Lesson "Medieval Assembly of European Wizards"
  15. Writing by J.K. Rowling: "Gilderoy Lockhart" at Pottermore
  16. World Book Day webchat, 4 March 2004
  17. Writing by J.K. Rowling: "Remus Lupin" at Pottermore
  18. Writing by J.K. Rowling: "Professor McGonagall" at Pottermore
  19. Harry Potter and the Chamber of Secrets, Chapter 13 (The Very Secret Diary) - "“Half-blood, sir,” said Riddle. “Muggle father, witch mother.”"
  20. Harry Potter and the Half-Blood Prince, Chapter 30 (The White Tomb) - "He’s just like Voldemort. Pure-blood mother, Muggle father . . . ashamed of his parentage, trying to make himself feared using the Dark Arts, gave himself an impressive new name — Lord Voldemort — the Half-Blood Prince — how could Dumbledore have missed — ?”"
  21. Writing by J.K. Rowling: "Ilvermorny School of Witchcraft and Wizardry" at Pottermore
  22. Writing by J.K. Rowling: "Sybill Trelawney" at Pottermore
  23. Writing by J.K. Rowling: "Celestina Warbeck" at Pottermore
  24. Writing by J.K. Rowling: "Dolores Umbridge" at Pottermore
  25. Writing by J.K. Rowling: "Mr Ollivander" at Pottermore
  26. 26.0 26.1 26.2 Garrick Ollivander fact file at Pottermore
  27. See this image of Porpentina Goldstein's MACUSA identification card on display as part of a prop exhibition in Japan. Both of their parents died of Dragon Pox, showing that they were wizards, which means that their Muggle heritage was more distant.
  28. Writing by J.K. Rowling: "Professor Quirrell" at Pottermore
  29. 29.0 29.1 Harry Potter and Me
  30. This individual refers to his father, a wizard, but later refers to films. This indicates that while having magical ancestry, he had some contact with the Muggle world. Thus, he was most likely a half-blood.
  31. PotterCast 130 transcript
  32. https://www.pottermore.com/news/watch-the-new-trailer-for-new-mobile-game-harry-potter-hogwarts-mystery
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