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Changelings are part of Western Folklore, a child of a fairy type (Elf, Troll etc) which has been secretly swapped for a human baby and left in its place. George Waldron gave the following description of one he saw in the Isle of Man and it was subsequently reprinted in ‘The Science of Fairy Tales’ (1891) by Edwin Sidney Hartland. "Nothing under heaven could have a more beautiful face; but though between five and six years old, and seemingly healthy, he was so far from being able to walk, or stand, that he could not so much as move any one joint; his limbs were vastly long for his age, but smaller than an infant's of six months; his complexion was perfectly delicate, and he had the finest hair in the world; be never spoke, nor cried, eat scarce anything, and was very seldom seen to smile, but if any one called him a fairy-elf, he would frown and fix his eyes so earnestly on those who said it, as if he would look them through. His mother, or at least his supposed mother, being very poor, frequently went out a-charing, and left him a whole day together. The neighbours, out of curiosity, have often looked in at the window to see how he behaved when alone, which, whenever they did, they were sure to find him laughing and in the utmost delight. This made them judge that he was not without company more pleasing to him than any mortal's could be; and what made this conjecture seem the more reasonable was, that if he were left ever so dirty, the woman at her return saw him with a clean face, and his hair combed with the utmost exactness and nicety."