Quote Originally Posted by OverKnight View Post
Of course weren't there two main dialects of French in this time period?
Yes, there were langue d'oil, spoken in the north of France and langue d'oc, spoken in the south.

As to swearing, I'll try and compile a list.

One of the most useful one in the starting years might be Bougre d'anglais !! (which could translate as English MF)