Well, to me 'Finnish' automatically means Finnish-language, and Ovda isn't, but your source is correct enough in calling it Finnish if it's from the Saami of northern Finland. That's not the problem: it's a much greater sloppiness that seems to have crept into astronomical naming. They're no experts on mythology or language, so once someone tells the IAU something plausible it can get stuck as apparent fact.
Not a Finnish name. There are enough web hits in a Finnish mythology context that aren't just this Godchecker text repeated, to suggest it is genuine; in which case it is probably Lappish (Saami). There is a feature on Venus named after a 'titaness', but it's not a Greek titaness, obviously (not a Greek name), and the word 'Marijian' has percolated in as if that's a kind of mythology—but the word means nothing to me, and the Marijian/Ovda/titaness/mythology connexion only occurs in explanation of this venerian feature. Someone's been sold a pup, is my guess.
Evil Finnish deep-forest demon. "Don't go into the woods on your own." If you are a woman, and a naked man advances towards you with his feet pointing backwards, you have no chance. It's him. If you are a man it will be a naked woman likewise. You will be danced or tickled to death. And then eaten. If you go as a pair it may confuse him... (From Godchecker.com)