if you are right, then you need a wicca spell to close the circle, a reverse spell other wise, the other two responders pretty much give you good tips what do you know about the land the house stands on? it might not have anything to do with the man, but just so happens spirits of the land decide to connect with the living you said the marks don't hurt, so it doesn't seem they mean harm try communicate with them or contact the man that left your house, see if he can help