Solve this riddle to win props!

first 2 correct respostas get 10 props each!!

I came to Hogwarts and graduated 1988,
I came back at the time of Harry's almost, yet terrible fate.
I came in first in a family of nine,
I handle money but it's definitely not mine.
I've got a fang on a part of my body, long hair is my style,
A woman was once staring at me, which was caught por Harry's eye.
I took a escrivaninha, mesa job and that's where my amor started,
I joined the Order of which cannot be parted.
I wear dragon hide on my feet, muggle clothes is what I've got,
My charm would outwit anyone, do you think they have not?
I respect my family with pride, unlike a dear brother that is so uncool,
One quality we share is that we were both Prefects at our dear old school.

Who am I?