Ep. 179 - The Three Princesses in Kvittenland
Once upon a time there was a fisherman who lived close by the castle and fished for the king’s table. One day when he was out fishing, he caught nothing, no matter how he baited his hooks—whether he baited and fished or fished and baited, not a bone hung on the hook. But as the day drew on towards evening, a head bobbed up from the water and said: “If I have what your wife bears beneath her belt, then you shall have fish enough.” The man quickly agreed, yes, for he knew not that she was with child. And then he caught fish enough, as many as he would have. But when he came home in the evening and told of how he had caught all the fish, his wife began to weep and complain, for the promise her husband had made, and asked God to help her; for she bore a child beneath her belt, she said.
Source via Norwegian Folktales