1904, Thomas Bird Mosher, The Bibelot, p. 160:The fish-tailed merchild carved in crumbling stone Wreathed with loose straggling roses, reigns alone...
2003, Liz Kessler, The Tail of Emily Windsnap, Scholastic, ISBN 9780439781787, page 57:There were mermaids with gold chains around slinky long tails, swimming along with little merchildren.