
In Rowling's world of evocative names like Pomona Sprout and Severus Snape, Neville's is one of the most interesting. "Neville," from the French, means "new village" and Longbottom, more obviously, means one who remains lowly, at the bottom, for a long time. Put them together, and I see prophecy: the boy who stays long at the bottom will be the foundation of a new civilization.
Like Harry, Neville lost his parents traumatically during Voldemort's first uprising. Unlike Harry, Neville knows everything about it. He knows what happened to them (cruciatus curse), who did it and exactly where she is (Bellatrix Lestrange, prisoner in Azkaban). You get the sense that his extended family draws a certain pride from rehearsing the story of how Frank and Alice refused to give up information under torture and went into catatonic shock because of it. Like Harry, Neville is haunted by his parents, but his ghosts are corporeal and he gets dragged to St. Mungo's to be regularly re-haunted by them.

Greatness has been thrust upon Neville by his Gran, who fully expects him to live up to his auror parents' example. Her expectations seem to hurt more than help, and yet, having someone see something worthwhile in him does provide a foundation from which he can change.
Harry has empathy for Neville from the beginning--he sees a kid likely to be bullied the way Dudley bullied him and his protective instincts kick in. While others get fed up with Neville's bumbling, Harry continues to defend him in his weakness. In book one, Harry tells Neville, "You're worth ten of Malfoy." For Neville to hear that from a peer, one who has had as tough a beginning as himself, sets more foundation stones for Neville's storehouse of courage.

It is not until Order of the Phoenix that Neville begins to come into his own, for two reasons. First, Neville's peers work hard to bolster his confidence. Second, Neville at last opens up to others about what happened to his parents. I wish the St. Mungo's scene had been included in the film, because it is so pivotal to Neville's development in the book. His parents being alive but catatonic has long been a sore point for Neville. How can heroes look so, well, embarrassing? Again, Harry's reaction to Neville's shame is affirming, and this clearly enables Neville to stop his pattern of self-sabotage.

I have to admit, one of my very favorite parts of book seven is when Neville proves himself a true heir of Gryffindor, grasps Godric's sword and destroys the final horcrux. Neville has come a long, long way from crawling, teary-eyed, on the floor of Hogwart's Express searching for his toad.
What are your thoughts on Neville's transformation from the butt of jokes to the heir of Gryffindor?