Hey everyone,

Welcome to another installment of Harry Potter Theory.

Over the many years that I’ve done YouTube, I see variations of the same comment pop up on my videos all the time — “Where does all this extra information come from?”

And to be honest, this is a fair thing to ask, because very often I go BEYOND the 7 books and pull information from things like extended publications, interviews and most pertinent to today’s video: TWEETS from JK Rowling herself.

Some of these secondary sources are an absolute goldmine for digging deeper into Potter lore, and while they sometimes just reveal fairly innocuous things like character birthdays… There’s also lots of good stuff in there that will change not just how you see a character, but also how you interpret major moments in the story.

And because a lot of these factoids came from quick, casual replies Rowling posted on Twitter…They would have been pretty easy to miss.

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