I went over the map again, basing the shires on the following maps:
http://www.lib.utexas.edu/maps/histo...tudor_1485.jpg
http://renaissance.dm.net/compendium/map-england.html

After a bit of searching on wikipedia.org and with what I had already I'm almost done with researching which shires existed and which nobles ruled them.

Green is nothing out of ordinary.
I could not find anything about Berkshire or Middlesex. Middlesex can be replaced by London and an appropiate title.

When an heir or king dies then his titles become unused for the rest of the game.

Any comments?