Mr Nott

'Mr. Nott is the father of Theodore Nott who is a Slytherin. Mr. Nott was a Slytherin too. He was a Death Eater and fought against Harry and his friends in the Hall of Prophecies and was caught and later sent to Azkaban. '

Nott is one of the 28 sacred Pureblood families and is one of the oldest Pureblood families.Nott was also the first of the Death Eaters who joined Lord Voldemort and one of those Pureblood families whose each generation was a Death Eater.