Harrieta Bilk

First appearing in A Hat Full of Sky, Harrieta is a young witch in the Near Lancre coven led by Annagramma. In the true role of bullying dressed up as leadership, Annagramma made fun of Harrieta for 'not being unable to do anything about her squint'. Granny Weatherwax would always say that a witch needs to have a good squint, so we could assume that Harrieta didn't.