I am glad to present you the "Encyclopedia of Total War".
At the moment, there you can find information about more than 300 tournaments in different games series Total War, since Medieval 1.
You can find it at this link
Table of Contents "Encyclopedia" is here
If you have additional information or comments on any tournament - write in thread of the tournament.
If you have information about a tournament that is not in the "Encyclopedia" - write in this thread
I wish fascinating reading).