It’s a family of elves that farm, mostly exotic stuff for potions, poisons etc.
The human dad Thorin, is friends with the elf dad.
It could be a demon, a beast like monster or anything else of the sorts.
I am starting to think a demon would be a little typical, but making it a beast that farmers would normally deal with in this world would be more practical like a rat monster, Ogre etc.
I just dont have the tragity feeling that would lead to the lie.