What Will said is right. However, there were proto-surnames already in this era, usually derived from nicknames. For example, Willelme Malez, "William (the) Hammer" or Richard (li) Goz, "Richard (the) Gaut". It's a relatively unexplored field for me though.
Heavens, no! I've never studied modern French - actually, I dislike it quite a bit. I've just learned some of the basics of its phonological history, which I find pretty interesting.Lily-Livered River Pirate said:Goddamnit, I just realised I never answered you here though I was sure I did, sorry about that! And thanks for taking the time, interesting stuff - I'm guessing you speak fluent modern French, too?