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Daoine Maithe - a/k/a "The Good People"; there is a question as to whether they're angels or faeries, since they were present at the Biblical Fall, but did not fall. It's generally assumed that they are awaiting salvation.
Daoine Sidhe - This is the name assumed by the Tuatha de Danann when the Milesians drove them underground. Their King is Finvarra, who to this day hold court in his palace beneath the faerie hill of Knockma. They are skilled chess players, and no human has ever beaten Finvarra in a game. Finvarra is a womanizer, frequently kidnapping human women. The Daoine Sidhe are also quite fond of hurling. (Hurling is an odd cross between field hockey and lacrosse, as many of you have told me. Thanks!)
Devas - These are plant faeries of dull sentience. They are most often seen not as a body, but as a faint golden glow clinging to healthy, well-cared for plants. It is thought that they often guide medical researchers who look for beneficial medical properties in plants. If a plant is neglected, the deva will abandon it, so water your plants!
Disir - these are spirits who attach themselves to a particular place, usually man made, like houses. Especially old houses. They are generally feminine ancestral spirits.
Duergar - These are a malicious form of Dwarf (see below) from Northern England. They revel in tricking people into dying.
Dwarfs - They are short, usually bearded and appear to be very old. Their aged appearance seems to be caused by the fact that they reach maturity at age three. They exist mainly in the mountains of Scandinavia and in mines in Germany. They are sensitive about showing their feet since they are usually deformed in some way. If you are curious of their feet, the only way to get an idea is to put flour, ash, or something of that sort in their path and to look at their footprints. Dwarves can't be above ground during the day since sunlight turns them to stone. Some say they exist as toads during the day and assume their familiar dwarvish form at night.
Dybbuk - a Jewish demonic spirit capable of possessing humans.
Each-Uisge - pronounced "Ech-ooshkya"; They are similar to the Kelpie, but far more dangerous. They inhabit lochs and seas and will eat their victims after tearing them into pieces, except for the liver, which they leave. If they are ridden inland, they are safe to ride, but if they catch the slightest whiff of the sea air...
Ekimmu - One of the uttuku, evil or vengeful spirits of the ancient Assyrians, the ekimmu appeared wailing and crying outside a home to signal an impending death, much like a Banshee.
Elementals - Stepanich says they're "sub-human Nature-Spirits: who are generally regarded as having pygmy stature..." [from Faerie Wicca: Book One, p. 31]
Ellyllon - Welsh Elves who feed on toadstools. Their queen is Mab. They are smaller than the Tylwyth Teg.
Elves - They're the Scandinavian version of faeries, complete with two classes, light and dark, like the Seelie and Unseelie. The Danish elves are beautiful from the front, but hollow when seen from behind. The Danish elves also like stealing dough other human foods. In Scotland, elves were faeries of human size. England called trooping faeries elves, especially small faerie boys.
Elves of Light - A tiny people of Algonquin legend. They live in the forest and enjoy dancing. Their Queen is Summer, a tiny but beautiful creature who was once captured by the gof Glooskap who kept her in a moosehide as he eneterd the wigwam of the giant, Winer. Her very presence caused Winter to melt away and spring to come, and woke the elves who had been hibernating.
ErlKonig - he is the "Elf King" in Germany. He's been known to warn people of their pending deaths. How he appears will relay to that person how he or she is going to die.
The Fachan - Faeries from the Western Highlands of Scotland. He has only one of each feature (one eye, one leg, etc.) He is extremely bad tempered and carries a spiked club, so stay out of his way.
Feeorin - This word can be used as a collective word for faeries. It usually indicates small green faeries, almost always with red caps. They love dancing and music. They are thought to be more or less friendly to humans, and have given warnings to them.
The Fenoderee - He is a type of Brownie from the Isle of Man. He is enthusiastic about helping the farmers, but isn't all that bright. The Fenoderee once was tricked into trying to fetch water with a sieve. The Fenoderee was at one time a handsome member of the Ferrishyn (the faerie tribe of Man), but he was exiled and his good looks taken when he missed the Autumn festival to court a human girl.
Fetes - a/k/a the Fates, from Upper Brittany
Fir Darrig - pronounced "fear dearg"; They like fairly gruesome practical jokes. Be nice to them or you may be on the receiving end of one.
Foawr - They are Manx stone-throwing giants. They often ravish cattle. Nasty beings, they are...
Formorians - These are sea faeries. They once were land dwellers, but the Tuatha de Danaan exiled them to the sea. They have since evolved into nasty sea monsters, known to attack ships.
Fyglia - a sort of personal spirit. They often take an animal form. The Native Americans call them "fetches" and use them as totems. They serve mostly as personal guardians