[X] Apologize for entering uninvited, introduce ourselves as his new neighbors and suggest that we've had previous bad experiences with trolls, and were perhaps mistaken as to the nature of our new neighbor. Offer something we brought (probably a freshly slaughtered sheep or something like that) as an apology gift/housewarming present.
-[X] Use Contention Connection and Light Touch to try and avoid violence, Goal Tell to see what the Troll(?) wants, and Cool Off to avoid going off half-cocked ourselves if things get heated.