Hermione Jean Granger is a fictional character in J.K. Rowling's Harry Potter series. She initially appears in the first novel, Harry Potter and the Philosopher's Stone, as a new student on her way to Hogwarts. After Harry and Ron save her from a mountain troll in the girls' toilets, she becomes close friends with them and often uses her quick wit, deft recall, and encyclopaedic knowledge to help them. Rowling has stated that Hermione resembles her at a younger age, with her insecurity and fear of failure
Hermione Jean Granger is a Muggle-born Gryffindor student whose parents are both dentists. She becomes the best friend of Harry Potter and Ron Weasley. J.K. Rowling states that she was born on 19 September 1979 and she was nearly twelve when she first attended Hogwarts. She is an overachiever who excels academically, and is described by Rowling as a "very logical, upright and good" character. Rowling adds that Hermione's parents, two Muggle dentists, are a bit bemused by their odd daughter but very proud of her all the same." They are well aware of the wizarding world and have visited Diagon Alley with her. Rowling originally planned for Hermione to have a sister, but the character never made an appearance in the novel and in 2004 Rowling noted that it "seemed too late" to introduce the character at that point. Rowling confirmed in a 2004 interview that Hermione is an only child
Hermione's name is taken from William Shakespeare's The Winter's Tale; Rowling claimed that she wanted it to be unusual since if fewer girls shared her name, fewer girls would get teased for it and it seemed that "a pair of professional dentists, who liked to prove how clever they are...gave [her] an unusual name that no-one could pronounce." Her original last name was "Puckle", but Rowling felt the name "did not suit her at all", and so the less frivolous Granger made it into the books.