Well done. I did the same research for myself when I was playing mirage. I think ubisoft missed a big opportunity to add a more detailed experience through this action packed time period. You can see it was initially meant to be dlc. Also, I too was confused with the dating. I came to the conclusion the game ends around 867 or 8. Wasif died in 867, and I cannot have such an important figures death misplaced. There was a mob with you when you attack the garrison. Another thing to add is, if you listen to citizens talk around the city, they mention a battle happening there. The evidence is further strengthened by the hole in the wall where al-mutazz's forces broke through. Hope you do before and after (playthrough) history videos on the real history of shadows. Awesome job, man!