Ded Moroz and Snegurochka

Snegurochka (Russian: Снегу́рочка), or The Snow Maiden, is a character in Russian fairy tales.
In one story, she is the daughter of Spring and Frost, and yearns for the companionship of mortal humans. She grows to like a shepherd named Lel, but her heart is unable to know love. Her mother takes pity and gives her this ability, but as soon as she falls in love, her heart warms and she melts.
This version of the story was made into a play by Aleksandr Ostrovsky, with incidental music by Tchaikovsky.
The modern Snegurochka is also depicted as the granddaughter and helper of Ded Moroz, the Russian version of Father Christmas.
The earliest tales of Ded Moroz presented him as a wicked and cruel sorcerer, similar to the Old Slavic gods 'Pozvizd' — the god of wind and good and bad weather, 'Zimnik' — god of winter, and the terrifying 'Korochun' — an underworld god ruling over frosts. According to legend, Ded Moroz liked to freeze people and kidnap children, taking them away in his gigantic sack. Parents were said to have to give him presents as a ransom in return for their children. However, under the influence of Orthodox traditions, the character of Ded Moroz was completely transformed, later adopting certain traits from the Dutch Sinterklaas (or Saint Nicholas), the prototype of Santa Claus.
Since the 19th century the attributes and legend of Ded Moroz have been shaped by literary influences. The fairy tale play Snegurochka by the famous Russian playwright Aleksandr Ostrovsky was influential in this respect, as was Rimsky-Korsakov's Snegurochka with libretto based on the play. By the end of the 19th century Ded Moroz had become the most popular of the various mythical New Year gift-givers in Russia. (с) Wiki