Dumbledore

This is Dumbleldore  he is the head master of Hogwarts.
In the 4th year he saved Harry from Umbridge because Pr. D said that  he did the organising of the Dumbledores Army (Harry did the organising really. )

hogwarts

This is Hogwarts the school of witchcraft and wizardry . And also Harry's school.
Later it gets destroyed by Lord Voldermort  

This is harry potters friends Ron Weaslely and hermioeny granger . They met on the hogwarts train.

The boy who lived the curse.

This is Harry Potter.  He is the only person who lived the killing curse from Voldemort or anyone.
He would of died if it wouldn't of been for his mum and dad. They sacrificed there lives for his.
( By the way he lived in Godrics hollow.)