HPW, Rule of thumb you don't have constitutions in monarchy's, you have them in republics. If there are kings and queens going back 100's of years, and all that divine right rubbish, then any rights the serfs got was either ransomed for or not worth fighting about and so given freely. In a republic normally, at the start, there is a Constitution written which has some semblance of democracy built into it. (Given the time period!) As far as I know a monarchy with a constitution is a constitutional monarch and only has powers decreed by something like a parliament. They are just figureheads and have no bearing on how the country is run.