A ghost given this name due to their being seen wearing gray or other dark colors such a black or dark brown. It is believed they are the spirits who died while focused on a lost love or an unrequited love.
Readers, please enjoy this guest blog post by Sandra Kynes, author of several books, including The Herb Gardener's Essential Guide, Plant Magic, and the new Witches' Encyclopedia of Magical Plants, among many others.
Although a few old books...