Good links! ** The Medieval Suffolk one is especially interesting -- thanks, AMB. I was pleased to see the bit about "the damage caused by unringed pigs" -- ie the destructive rooting I was talking about in my last post. To stop the pigs doing that, they put rings through their noses (as in The Owl and the Pussycat).
** A sausage pun...
** A sausage pun...