BTW, IMO this is an example of how some oral tales are actually LESS brutal than the literary versions. (notice how the boy doesn't pray to Ukko to kill the wife, just to make the firewood not catch fire. Also, in the literary version created by Lönnrot, Ilmarinen's wife makes a series of promises to Kullervo before cursing him.

In the literary version, too, there's a scene of the woman baking a stone into the bread, which doesn't exist in this song version (and maybe other variants) The folk version lets us infer that she baked it in, it doesn't show us outright.