Mr. and Mrs. Granger are both London dentists.

Draco often calls her a "Mudblood", an insulting epithet for Muggle-born wizards.

As the second task of the Triwizard Tournament, Viktor Krum rescues Hermione from the Merpeople.

Hermione's Patronus is an otter, J. K. Rowling's favorite animal.

Her full name is Hermione Jean Granger.

After Harry and Ron save her from a mountain troll in the girls' toilets, Hermione becomes close friends with the boys and uses her quick wit and encyclopaedic knowledge to aid their cause.

Hermione is horrified by the cruelty that house-elves suffer, and founds S.P.E.W., the Society for the Promotion of Elfish Welfare, as an effort to gain basic rights for them.

Hermione destroys Hufflepuff's cup (one of Voldemort's horcruxes) with a basilisk fang.

In Harry Potter and the Cursed Child, set 19 years after the events of Harry Potter and the Deathly Hallows, Hermione is the Minister for Magic.

Hermione invites Ron to Slughorn's Christmas Party, but he romances Lavender Brown instead because he's still jealous Hermione kissed Viktor Krum.