Fans Point Out Obscure Hogwarts Professor Lore

From Redditoru/nxtm4n:

Professor McGonagall took over five minutes to be Sorted, landing between Gryffindor and Ravenclaw. Professor Flitwick also took more than five minutes, sorting between Ravenclaw and Gryffindor. Later, they joked about it and sometimes guessed other outcomes.

From Redditoru/EverlyEvie:

Some say Snape was the only Death Eater who could make a Patronus. Is this true?

From Redditoru/ebbship:

From what I read, yes.

He was the only one who could conjure a happy thought. Other Death Eaters could not.

From a deleted Reddituser:

Minerva was the Roman goddess of war and wisdom.

I studied Latin and Ancient Greek at university. I still get excited when I see a classical reference.

From Redditoru/schwartzface:

She names people well. Lupin references being a werewolf. Dumbledore is an old English word for bumblebee; I see Dumbledore humming through Hogwarts halls.

From Redditoru/tatertot1000:

McGonagall played on the Quidditch team.

From a deleted Reddituser:

Snape protected Harry because he loved Lily and owed James a life debt.

From Redditoru/anuragkadiyala:

Professor McGonagall married her former boss at the Ministry of Magic.the Ministry of Magic.

From Redditoru/MichelleRosie:

Dumbledore was about 115, I recall. JK first said 150 but later found the math wrong.

From Redditoru/anuragkadiyala:

Hagrid cannot create a Patronus.

From Redditoru/starflashfairy:

Arthur pointed out Cuthbert Mockridge, the Head of the Goblin Liason Office at the Quidditch World Cup. Professor Binns' first name is also Cuthbert.