The adventures of Harry Potter came with many different titles, but every witch and wizard would agree that Harry Potter and the Quest of Centaur seems like a pretty odd one. Even so, this title was at one time under consideration as the moniker for Harry Potter project. But why?

The Potterverse canon is a constant state of expansion, thanks to Pottermore, spin-offs like Fantastic Beasts and Where to Find Them and Harry Potter and the Cursed Child, but there are a number of Harry Potter titles we could’ve seen that never came to pass.

In digging up some trademark info, Geek.com found a slew of Potter trademarks from Warner Bros. and a company called Seabottom Productions Ltd. that were never used. Though it’s unclear if there was an intention of using these at some point, now that they’re abandoned, we definitely won’t see any new Harry Potter stories arising which make these titles make sense.

While “Harry Potter and the Battle for Hogwarts” and “Harry Potter and the Hogwarts Hallows” were early titles J.K. Rowling considered for Harry Potter and the Deathly Hallows, some of these new titles have us wondering what kind of stories we might’ve seen if there was a real “Harry Potter and the Quest of the Centaur” or “Harry Potter and the Tower of Shadows.”

Harry Potter, Ginny Weasley, and Neville Longbottom in 'Harry Potter and the Deathly Hallows: Part 2'

Could we have seen more involvement from Firenze and the centaurs in the Forbidden Forest in one of the books? Might the Tower of Shadows be a reference to the Astronomy Tower where Dumbledore was killed? Or Azkaban, perhaps? Or might it be a location that we never got to visit in the Potter books?

Here are some of the other abandoned titles recently discovered: Harry Potter and the Serpent Prince, Harry Potter and the Curse of the Dementor, Harry Potter and the Death’s Head Plot, Harry Potter and the Shadow of the Serpent, Harry Potter and the Serpent’s Revenge, Harry Potter and the Realm of the Lion, Harry Potter and the Mudblood Revolt, and finally, Harry Potter and the Hogsmeade Tomb.

Anybody else feeling awfully curious about “Death’s Head Plot” and “Realm of the Lion” right about now?

Photos via Warner Bros., Warner Bros. Pictures