Ferdinand the Faithful
When they came to the castle, the white horse told Ferdinand the Faithful that he must go in, and that on the table in the princess's bed-room lay the writings. And Ferdinand the Faithful went in, and fetched them. When they were on the lake, he let his pen fall into the water; then said the white horse, "Now I cannot help thee at all." But he remembered his flute, and began to play on it, and the fish came with the pen in its mouth, and gave it to him. So he took the writings to the castle, where the wedding was celebrated.
The Queen, however, did not love the King because he had no nose, but she would have much liked to love Ferdinand the Faithful. Once, therefore, when all the lords of the court were together, the Queen said she could do feats of magic, that she could cut off any one's head and put it on again, and that one of them ought just to try it. But none of them would be the first, so Ferdinand the Faithful, again at the instigation of Ferdinand the Unfaithful, undertook it and she hewed off his head, and put it on again for him, and it healed together directly, so that it looked as if he had a red thread round his throat. Then the King said to her, "My child, and where hast thou learnt that?" "Yes," she said, "I understand the art; shall I just try it on thee also?" "Oh, yes," said he. But she cut off his head, and did not put it on again; but pretended that she could not get it on, and that it would not keep fixed. Then the King was buried, but she married Ferdinand the Faithful.
He, however, always rode on his white horse, and once when he was seated on it, it told him that he was to go on to the heath which he knew, and gallop three times round it. And when he had done that, the white horse stood up on its hind legs, and was changed into a King's son.
From Jacob and Wilhelm Grimm, Household Tales, trans. Margaret Hunt (London: George Bell, 1884)