hence bogeyman?

Apparently, they are similar to the Boggart in some ways, but are their own creature. I had a look in my book of Spirits, Fairies, Leprechauns and Goblins, An Encyclopedia by Carol Rose, and this is what she had to say:

"This [bogeyman] is a type of bogie also known as Booger Man, in the folklore of the mainland areas of Britain. It appeared in a fearsome and grotesque human shape in lonely places, terrifying people traveling alone on the roads at night. This spirit is known as the Booman in the Orkney and Shetland Islands off the north coast of Scotland. More recently the use has been more in keeping with that of a nursery bogie."

Under Bogie, she goes on to describe that it is a class of frightening goblin or bugbear in English folklore.

Boggarts (also known as a Bag, Boggard, Buggard) originated in North Country English folklore, and is related more to a spirit or hobgoblin.

Interesting read, if you like folklore. I've been longwinded now, but I can't help it. I enjoy the stuff.

Ali