There are the Gaelic "Tuatha De Danann" (Ireland) or the "Sidhean" (Scotland) who could be seen as very close to the Tolkien idea of the "Elder" children, or Elves.

In Celtic mythology these beings were some of the first inhabitants of the world, Long befor mortal man came on the seen. They withdrew into Tir nan Og after Mankind defeated them. I think in Ireland they were said to have been Angels that fell to earth, rather than hell, after Lucifers revolt.