Luc Millefeuille

Luc Millefeuille was a French wizard pâtissier who became famous for poisoning Muggles. In his youth, he attended Beauxbatons Academy of Magic.

Etymology
Luc is the French form of the name Luke, which was derived from the Greek name Loukas which means "from Lucania".

A mille-feuille (more commonly called a vanilla slice, a cream slice, or a Napoleon in the United Kingdom) is a pastry comprised of puff pastry, crème pâtissière, and glazed icing in layers.