Under my Kalevala noms, there's a couple of characters that might be confusing. I've nominated both "Louhi's Daughter" and "Louhi's Second Daughter". Neither of them have names, but they do have distinct roles in the Kalevala.

"Louhi's Daughter" is meant to refer to the daughter who appears first and most often, and eventually marries Ilmarinen . Some of her appearances can be found here, here, and here.

"Louhi's Second Daughter" is meant to refer to the daughter that Ilmarinen tries to marry after the first one dies, and only appears here.