Fairies In Elizabethan England

We call them faerie. We don't believe in them. Our loss. ~Charles de Lint. Although, unlike in modern times, where the general populus does not believe in the supernatural beings or happenings, during the Elizabethan era and surrounding time periods, fairies were not only believed in but were thought to be part of everyday life in The British Isles. Fairies were embedded in Elizabethan culture and literature.
Fairies are beings that take a resemblance to humans. Usually, they are described as shorter versions of humans with extraordinary abilities. These abilities always seem to affect humans in many different ways. Whether this was for good or ill will depended on how the humans acted towards fairies and their customs. If someone, even accidentally,

Because of their close resemblance to humans, fairies could intermingle with humans, even so far as to become the mothers or wives of legendary heroes in mythology (Taylor, Tuatha de Danann). In the tale of the hero-bard Osirin and his fairy-wife Niam of the Golden Hair, Osirin is convinced by Niam to come to her homeland. Niam comes from the Otherworld where fairies dwell. The Otherworld is a place with no death or sorrow. After his and Niam’s marriage, Osirin accidentally steps on a stone that he wasn’t supposed to. At once, he is struck with irresistible homesickness and has to see his own native land one more time. Reluctantly, Niam gives him the same horse she used to find him in her trip to our realm and warns him not to step foot on the ground. Almost immediately after arriving home, he is asked to help some men with a job. As soon as he steps off the horse Osirn ages the 300 years he spent away from home in The Otherworld (Taylor, Irish Otherworld)

These ancient beings are known as The Fomorians. They are the first inhabitants of the British Isles. Ages after the Fomorians took over the area, the Tuatha de Danann drove them from the land and became the rulers. The Tuatha de Danann forced the Fomorians into the Otherworld or Annwfn. Soon after the Tuatha took over, humans discovered Ireland, Scotland and the surrounding areas and forced the second race of fairies into the Otherworld alongside the Fomorians (Taylor, Samhain).
Annwfn is the Otherworld where fairies are known to come from according to Celtic mythology. Annwfn is a land of magic and is shrouded in mystery. It is described as a magic glass castle that appears and disappears and random times. Because it does not have physical boundaries, Annwfn has no specific location and is simultaneously not above or below ground and is somewhere over the Western Sea, or the Atlantic (Taylor,