Despite Rowling changing some details over the years, the Harry Potter canon is one of the better-established fictional universes with many details generally known and unchanged. Still, people ask questions, and we are here to answer them for you. One of the oddest questions we’ve seen is if Hermione is Voldemort’s daughter. So, let’s see where the confusion is coming from!
Hermione Granger is not Lord Voldemort’s daughter
No. I don’t know how much we can stress this out, but – no, Hermione Granger is not Lord Voldemort’s daughter. There is no way this is possible. Surely, they are both smart, they are excellent wizards and have been excellent students, but they’re not the only ones. Hogwarts has had a series of brilliant wizards and witches, so using this as an argument is outright ridiculous, if not stupid.
Plus, Hermione Granger has parents, and Rowling clearly established both her heritage (she is Muggle-born, unlike Voldemort) and her family. Also, Voldemort was a typical Slytherin, while Hermione never shared any traits with that House.
Voldemort did, however – and that was unbeknownst to most – have a daughter with Bellatrix Lestrange, one of his most loyal followers. This was revealed in Rowling’s Harry Potter and the Cursed Child, where the readers found out that Voldemort’s daughter, Delphini (or Delphi), was born in 1998 and that she spent a part of her childhood pretending to be Delphini Diggory, the niece of Amos Diggory, Cedric Diggory’s father; as it turned out, Delphini jinxed Amos into believing she was his niece. She later wanted to restore her father’s legacy but ended up in Azkaban for murder; this is the plot of The Cursed Child.
So, to iterate once more – Hermione Granger is not Lord Voldemort’s daughter, and there is absolutely no way that could be. Well, not until J.K. changes something (again)…
Where does this confusion come from?
We couldn’t actually find out when and where this silly question came from since it’s not supported by anything written in the books or shown in the movies. During our search, we may have found a possible suspect – a 2011 YouTube fan video entitled “Voldemort’s The Daughter”, whose description presents a thesis that Hermione’s actually Voldemort’s daughter, along with a lot of other nonsense. You can check out the video yourselves:
The main issue with this video is that it does not substantiate its thesis but rather just presents the theory and nothing more. It is simply a fan video, but since it’s rather old and has still survived on YouTube (despite having only 40,000 views), it might be the cause of this confusion. But you shouldn’t really believe it.