Elfmaid

On the other hand, the kobolds, brownies, and other household sprites who are not merely benign, but helpful, if well treated; the elf-maids who marry mortals, the swan-maidens, and the like, bear the stamp of Teutonic fancy.

Source: wiktionary

If Atle had believed in trolds and elf-maids, he should surely have supposed that Lars must have seen something of the kind on his night walk in the forest.

Source: wiktionary

She became known as 'the Fair' because of her beauty; many said that she looked more like an elf-maid than a hobbit.

Source: wiktionary

“Soth fell in love with a beautiful elfmaid, a disciple of the Kingpriest of Istar. […]

Source: wiktionary