Through a tangled and half-forgotten path: Occupations of the Poor

Child-strippers: "Old debauched drunken hags who watch their opportunity to accost children passing in the street, tidily dressed with good boots and clothes"

River-finders, who would "haul[] out the flotsam of wood which might be used for firewood of a baby;s cradle, or the occasional corpse which could be turned in for a reward"; they were apparently a hereditary class.

Source.