The story of Lohengrin as we know it is based on two principal motives common enough in folklore: the metamorphosis of human beings into swans, and the curious wife whose question brings disaster.
The known fauna comprise boars, bears, deer, swans, geese, pheasants and quail.
Supreme geese (or swans),"a term applied to the world-soul with which they claim to be identical.
But in French story Helyas is not the son of Parzival, but of the king and queen of Lillefort, and the story of his birth, of himself, his five brothers and one sister is, with variations, that of "the seven swans" persecuted by the wicked grandmother, which figures in the pages of Grimm and Hans Andersen.
In 1697 the Dutch captain Vlamingh landed on the west coast of Australia, then called New Holland, in 31° 43' S., and named the Swan river from the black swans he discovered there.