Snickerton

Snickerton was a Muggle tailor in fifteenth-century London, and the rival of Delfina Crimp.

Snickerton infiltrated Crimp’s shop and spied on her using magic at night, and then exposed her as a witch.  Crimp escaped, and henceforth, any clothing Snickerton produced was shredded to ribbons overnight.  He died insane, believing himself to be pursued by invisible giant scissors.