Sacred Twenty-Eight

The Sacred Twenty-Eight are, according to Cantankerus Nott, the twenty-eight British families that were still "truly pure-blood" by the 1930s.

The twenty-eight families are comprised of:
 * Abbott
 * Avery
 * Black
 * Bulstrode
 * Burke
 * Carrow
 * Crouch
 * Fawley
 * Flint
 * Gaunt
 * Greengrass
 * Lestrange
 * Longbottom
 * Macmillan
 * Malfoy
 * Nott
 * Ollivander
 * Parkinson
 * Prewett
 * Rosier
 * Rowle
 * Selwyn
 * Shacklebolt
 * Shafiq
 * Slughorn
 * Travers
 * Weasley
 * Yaxley