Sometimes, the story of Hilppa is the same as that of Vorna. However, there also exists a different one I'm going to tell here.
Hilppa was the leader of twenty "Russian" (Orthodox Karelian?) bandits who decided to live in a couple of hidden cabins on a hill east of the Lammasjärvi lake in Kuhmo. This would've been around the 17th or 18th centuries (1650-1750 maybe). They had managed to build quite the wealth by performing robberies all around Kainuu during summers. Once, they also kidnapped a Finnish woman to be a wife (for Hilppa himself I assume). On a winter morning, when the blanket of snow has very crusty, she managed to escape and ran into Finnish buildings. She told them that there were "Russians" on the hill living a very wealthy life. Hearing this, a few men decided to gather together and go there to attack these bandits.
The "Russians" heard weird noises, and some asked what it could be, but others dismissed it: "It's just swans singing in the pond". The truth was that the Finnish men were approaching. By night, they arrived to the hidden cabins and blocked all the doors from outside, setting the walls on fire. Hilppa managed to pull himself onto the roof through the smoke hole (these kinds of cabins did not have chimneys, only a hole near the ceiling) and began his escape, but the attackers caught him.
Hilppa tossed money behind him, but the Finns shot him dead and took his sword. The wife who had escaped could not believe that Hilppa was dead:
 Ei oo Hilpan hiihtänyttä Eikä sen kalliin pään kaatajata Suomen maassa suuressa |
There is no one who could catch Hilppa on skis Nor anyone to fell his precious head In the great land of the Finns |
The hat of Hilppa was shown to her, but she still did not believe it:
Saapukka johonni saapi Kintas tielle kirpoaapi Hilpeältä hiihtäjältä |
An ankle boot might end up somewhere A glove fall to the road From a jolly skier |
But when she saw his sword, she had to believe the truth. Thus, the hill was named Venäjänvaara (Russian hill), and whatever was left of the bandits was tossed into the nearby Kallolampi pond.
Like I said, some versions of Hilppa's story are like Vorna's, so in those cases, Hilppa's wife would've been a consenting partner instead of a kidnapped woman.