On reasons of the Russian folk tales. Once a czarevitch wanted to get married, and necessarily on the Gold braid - beloved beauty that is seen by him in sleep. Ivan asks a father to release him on light to search a tsarevna. Tsar certainly against marriage on some there beauty, getting married is needed on a boyar's wife. He locks a son, but a self-willed czarevitch however escapes and sets out in searches.
Once upon a time there was a king and a queen, and they had one son, Ivan Tsarevich. And everything would have been fine if Ivan had not come to his parents one morning and told them about his Beloved Beauty, about which the nannies sang to him, and now he dreams every day. And he wants to go around the wide world to look for Beloved Beauty. Ivan Tsarevich went, and on the road he met the robber Bulat, who became his twin brother. Together they began to look for Beauty.—Bazza the Beast