How can you "rule out" archival documents of Lake Constance region? I know that Lake Constance and the Council have been mentioned many times on this forum, so in this sense there is indeed nothing new here, I agree with ololololo.
Also, could you give a example of what you mean by "guild notation system"? I only know about generic shorthand notation, I didn't know there were specific guild notation systems.
Also, could you give a example of what you mean by "guild notation system"? I only know about generic shorthand notation, I didn't know there were specific guild notation systems.