Ok, take the oxen and lead it to the barn and tie the harness somewhere in the barn. Later, harvest the field, put all the grain in storage in the barn and head off to investigate the house.
The wooden door flies open. In front of you stands an elderly farmer pointing a blunderbus at your chest.
"What did you do to my wife?"
When prompted further, inform this farmer that I haven't seen her, inquire about my wife (ridiculous, I would never be held down by a woman), make friends, pretend to go on my way, double back and kill the elderly farmer. Loot his house and continue on.
Talk about a Renegade action.
Think I'm gonna try a slightly different, less fun, but more karmically correct way.
Back up a few steps, raise your hands in a clear sign that you're not armed nor are you going to harm him and say "I'm sorry sir, but you must be confusing me with someone else. I haven't seen or touched your wife. I heard a woman scream and I came to investigate. I'm guessing your wife is the woman I heard. What's wrong?"