The well of the world's end
Do what you're bid, or out you go, you and your froggie."
So the girl took the frog with her to bed, and kept it as far away from her as she could. Well, just as the day was beginning to break what should the frog say but:
"Chop off my head, my hinny, my heart,
Chop off my head, my own darling;
Remember the promise you made to me,
Down by the cold well so weary."
At first the girl wouldn't, for she thought of what the frog had done for her at the Well of the World's End. But when the frog said the words over again, she went and took an axe and chopped off its head, and lo! and behold, there stood before her a handsome young prince, who told her that he had been enchanted by a wicked magician, and he could never be unspelled till some girl would do his bidding for a whole night, and chop off his head at the end of it.
The stepmother was that surprised when she found the young prince instead of the nasty frog, and she wasn't best pleased, you may be sure, when the prince told her that he was going to marry her stepdaughter because she had unspelled him. So they were married and went away to live in the castle of the king, his father, and all the stepmother had to console her was, that it was all through her that her stepdaughter was married to a prince.