Sadly, Flemish history is not my area of expertise. (I just sounded like my RP character, gah.) Wallonie wasn't really a unified area in 1302, though, and even Flanders wasnt the area we now think of as such, so. Hm. I kind of want to tell you to go read, or even better, watch the movie, De Leeuw Van Vlaanderen, but neither is very historically accurate, heh.
no subject