Just the individual town/village names going back to the domesday book in 1086, it's only about 15 miles wide so it wouldn't have been vastly populated anyway. The massive influx came in the late 18th and 19th century and then there was a lot of emmigration to Australia and America during that time too which we discovered when we did the family tree. If you've haven't done it, do it.
There's a castle right in the middle which was sieged by Cromwell in the English Civil War, that's the really cool bit but they decided to build an art deco zoo around it.
Sorry guys, this has totally veered off drums, I can waffle on about local history all day.