elf-children

Noun

elf-child (plural elf-children)

1. A child of an elf; a young or infant elf, especially one that has been left as a changeling.
   • “Good-wife,” said the miller, “as sure as mill stones run round, that's an elfwoman and that's an elfchild, — or they are the fair resemblances, made by the foul spirit of a mother and bairn, for deceiving thee and me, and bringing us to shame.”1823 September 1, The Atheneum, or, Spirit of the English Magazines, Boston, page 424, column 1