"Where are you going, fool?"
"To cure the king's daughter."
"But you have nothing to cure her with!"
"All right," he said, and drove away.
He came to the king's palace, and the moment he stepped on the porch, the king's daughter was cured.
The king rejoiced, and sent for Iván. He had him all dressed up:
"Be my son-in-law!" he said.
"All right," he said.
And Iván married the king's daughter. The king died soon after, and Iván became king. Thus all three brothers were kings.