Elf-child

“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.”

[A]nd there the baby was charmed away from her, and an elf-child left in her arms.

As a result of this miserable union one elf was left alone, the Elf-child whose birth in the woods had first disclosed the fact[.]

“No wonder, then, when I was an elf-child here, and saw the little fellow I used to sport and fight with, grow pale, and pine away, it was in great perplexity of mind I was.”