The last letter game

ellerby

Yule Ball

Lockhart

tofty

Tonks

Sprout (Since I can't think of any 'Y' Names at the Moment)

thestrals

severus

Salazar

St. Mungo's Hospital for Magical Maladies and Injuries

[Late Post...]

Slytherin

Number twelve, Grimmauld Place

Evans

everard

dumbledore

Extendable Ears

shrieking shack

Knockturn Alley

Yellow

Warrington