An Esthonian tale speaks of a father who found his little boy one night in an unquiet slumber. He noticed over the bed a hole in the wall through which the wind was whistling, and thought it was this which was disturbing him. Wherefore he stopped it up; and no sooner had he done so than he saw on the bed by the boy's side a pretty little girl, who teased and played with him so that he could not sleep in peace. The child was thus forced to stay in the house. She grew up with the other children, and being quick and industrious was beloved by all. Specially was she dear to the boy in whose bed she was found; and when he grew up he married her. One Sunday in church she burst out laughing during the sermon. After the service was over the husband inquired what she was laughing at. She refused to tell him, save on condition of his telling her in return how she came into his father's house. When she had extracted this promise from him, she told him she saw stretched on the wall of the church a great horse-skin, on which the Evil One was writing the names of all those who slept or chattered in church, and paid no heed to God's word. The skin was at last full of names; and in order to find room for more the Devil had to pull it with his teeth, so as to stretch it further. In so doing he bumped his head against the wall, and made a wry face: whereat she, who saw it, laughed. When they got home her husband pulled out the piece of wood which his father had put into the hole; and the same instant his wife was gone. The husband was disconsolate, but he saw her no more. It was said, however, that she often appeared to his two children in secret, and brought them precious gifts. In Smaland a parallel legend is current, according to which the ancestress of a certain family was an elf-maid who came into the house with the sunbeams through a knot-hole in the wall, and, after being married to the son and bearing him four children, vanished the same way as she had come. In North Germany it is believed that when seven boys, or seven girls, are born in succession, one among them is a nightmare. A man who had unknowingly wedded such a nightmare found that she disappeared from his bed at nights; and on watching her he discovered that she slipped through the hole for the strap by which the latch was lifted, returning the same way. So he stopped up the opening, and thus always retained her. After a considerable time he wanted to use the latch, and thinking she had forgotten her bad habit and he might safely take the peg out, he did so; but the next night she was missing, and never came back, though every Sunday morning the man found clean linen laid out for him as usual.[200]