Welcome to the The Harry Potter Lexicon
The most compleat and amazing reference to the wonderful world of Harry Potter
est. 2000 A.D.
Phase of the Moon: Full Moon
5 GBP = 1 Galleon 
Puzzles, Mysteries, and Loose Ends
Stuff we still wonder about, even after book seven … the other secret passage “There are seven in all. Now, Filch knows about these four” — he pointed them out — “but we’re sure we’re the only ones who know about these. Don’t bother with the one behind the mirror on the fourth floor. We used it until last winter,… Read More
Side-Along Apparition
Side-Along Apparition is a form of instant magical travel in which the Apparator touches someone else, such as a child too young to Apparate, and Apparates with that person as a “passenger”. Read More
A very exciting trip to the zoo for Dudley’s eleventh birthday
Harry accompanies Dudley, Piers Polkiss, Aunt Petunia, and Uncle Vernon to the zoo, where he unknowingly uses Parseltongue to speak with a boa constrictor. When Dudley notices and comes running, the glass of the snake’s enclosure mysteriously disappears and the snake escapes. Read More
The Fantastic Beasts Saga Timeline
The dates for each of these events is derived from a close read of canon sources, including the scripts for Fantastic Beasts and Where To Find Them, and Fantastic Beasts: The Crimes of Grindelwald. 1881 Albus Dumbledore is born c. 1883 Gellert Grindelwald is born c. 1891 Ariana Dumbledore is attacked by Muggle boys,… Read More
Ancient Magic
Ancient Magic is magic which happens independently of efforts by wizards, an effect which is triggered by events and powers endemic to the nature of reality. It is extremely old and mysterious, and a wand is not necessary for it to work. It is part of the “magical-ness” of the universe. Examples include the bond of love which happens when… Read More
MuggleNet’s “Ten Amazing Facts” and How To Find Them
MuggleNet just posted a really cool video calling out Ten Amazing Facts you can research on the Lexicon. If you’re looking for a quick way to find them, here’s our Ten Facts Guide: Galleon to Muggle Money converter You can find the exchange rate for Galleons to pretty much any Muggle currency on the home page, along with… Read More
After Voldemort’s return to power, Horace Slughorn found himself the unwilling host of Corban Yaxley. However, Yaxley left without discovering Slughorn’s hiding place; Slughorn had transfigured himself into an armchair. Slughorn attempted the same trick… Read More
“There are powers Dumbledore doesn’t … powers no decent wizard …”… Read More
The Harry Potter Minute
🎙️ Conversations: St. Patrick's Day
Lexicon Podcast
🎙️ Episode 31: The Crimes of Grindelwald Trailer
Latest from the Lexicon Blog
Why Did Jacob Kowalski take so long to Return to America?
• Essay
How is Professor McGonagall in Crimes of Grindelwald?
• Essay
Though it is a charming bit of plot candy to throw out to eager Potterphiles, the mention of Professor McGonagall in the latest film “Fantastic Beats: The Crimes of Grindelwald” has caused a tidal wave of reaction all out of proportion to the size of the scene. The question… Read More
Where's the new canon?
• Article
You might be here on the Lexicon looking for information about the characters, things, creatures, events, etc. from “Crimes of Grindelwald.” If so, you might have to have to wait a week or so for everything to appear. We have a spreadsheet of 143 entries which need to be added… Read More
The Fantastic Beasts Saga Timeline
• Article
The dates for each of these events is derived from a close read of canon sources, including the scripts for Fantastic Beasts and Where To Find Them, and Fantastic Beasts: The Crimes of Grindelwald. 1881 Albus Dumbledore is born c. 1883 Gellert Grindelwald is born c. Read More
Discussing The 'Crimes of Grindelwald' Reveal (MAJOR SPOILER WARNING)
• Essay
UPDATE: I’ve now read the screenplay for the film and some interesting new details have been revealed. It undoes some of my theories in this post, but I’ve keep my original theories and put my updated ones below them in the “UPDATE” section. Anyway… MAJOR SPOILERS for… Read More