Traditionally, fantasy has woven together Medieval feudalism and faerie folklore in some fashion or other.

FORBES: Is Fantasy a Christian Genre?

So she imagined they were putting into him a sort of liquid mortal sadness, a corrective against a dangerous abundance of faerie joy.

NEWYORKER: A Tiny Feast

He had not hidden him anywhere, and no faerie had made off with him, or used his parts in a spell, or put him in a pie to eat.

NEWYORKER: A Tiny Feast

No nurse had been in for hours, and the last to come in had lain down upon the clover-covered floor and giggled obtrusively until some thoughtful faerie had put an egg in her mouth to shut her up.

NEWYORKER: A Tiny Feast