I have a naming system based on appearance at birth.

For example, your avatar Xay I would name "Flower" due to the flowers on her head, and the very bright colors she is wearing.

My faveorite villager had short red hair, a headband, and a black dress. She was named "Karrot", because she looked like she had a carrot-top (I still miss little Karrot).

And all my chiefs, wheter boy or girl, always have the name Chiefy.