Broken quest (Leifnarr's death). Is it possible to fix it?
Solution 1:
No, there is no console on the PS3 even with a USB keyboard.
There is no known way to complete this quest on a console if the correct dialogue isn't available on his
wife Grosta or son at Heartwood Mill
However, if you just want to clear the quest from your journal, you can
kill his wife Grosta
That's confirmed to work on the PS3.