My thoughts on this are that the oldest ghost to die in the Harry Potter books would have been the Grey Lady (Helena Ravenclaw). She is the daughter of Rowena Ravenclaw, which is what leads me to believe that, out of the ghosts we've encountered in the books, she would be the oldest.
Charity Burbage was the first character to be killed in Harry Potter and the Deathly Hallows. It was on the last page of the first chapter, The Dark Lord Ascending.
Charity Burbage,Mad-Eye Moody, and The Minister of Magic.
If by ghost girl you mean Moaning Myrtle, the ghost who haunts the girls bathroom, she was killed when she looked into the Basilisk's eyes.
There is no Niki in Harry Potter.
There is no character named 'Milford' in Harry Potter.
There is no 'mouthouy' in the Harry Potter, so the answer is no.
Harry Davis - potter - died in 1986.
There is nobody in Harry Potter with the name Omani.
Nobody died in Harry Potter and the Chamber of Secrets.Ginny Weasley almost died, but Harry saved her in time.
There is no such character in Harry Potter.
There is no Niki in Harry Potter.
Yes Voldemort does die, Harry Potter defeats him
Harry Potter doesn't die and if you want to know for yourself, then read the Harry Potter series, espeially number 7.
Harry Potter doesn't die during the series.
Harry Potter didn't die because he is the main character, and J.K. Rowling didn't want him to die.
There is no character named 'Milford' in Harry Potter.
No, Harry Potter survived.
Harry Davis - potter - died in 1986.
There is no 'mouthouy' in the Harry Potter, so the answer is no.
There is nobody in Harry Potter with the name Omani.