Verity was an employee of Weasleys’ Wizard Wheezes (HBP6).
Other canon notes and references
Dates fl. 1996
Species / Race Witch
Profession Support staff member at Weasleys' Wizard Wheezes
First Introduced HBP6: Draco’s Detour
"Verity" means "truth", but it's also a (rather uncommon) girl's name in the English-speaking Muggle world (along the lines of other "virtue" names such as Charity or Mercy).