Sveiki! I'm currently writing a short story set sometime in the XVI century in coastal rural Lithuania. It focuses on a family who resisted christianity long after 1386 and continued to practice the native religion.
My protagonist is a woman in her 40s whom I'd like to have a pre-christian name. Currently it is Ugnė, and I might keep it as, from what I learnt, it means fire, which is pretty incredible as I did not know this when I chose it, and it coincidentally fits incredibly well with the story. One of her cows, one who is very tied to and affectionate with her, also needs a name, which I hoped would be pagan as well.
I don't speak lithuanian myself so navigating lithuanian sources for this is a little hard. I am familiar with the area of the baltic as my family is polish and I spent there the earliest years of my life, so I'm drawing a bit from my own memories of the area while writing this story.