Wouldn't giving a vassle that is pissed off at you territory be a bad move? Could you not execute him or something?
the cities/churches within a region can controled if you own them. They also count as a personal holding and can be gifted away separated without lose the region (that is why you lost 2 personal holdings by give away Tver)
Actually you can chose any day between 1066 and 1337. On another note I'm Danish... So I guess I'll hunt you down if I got time for it. ;)
Awesome and this corresponds with my assignment on the russian throne i'm defiantly writing this up ;-)
On another note, Abyssinia and Nubia are Orthodox, but african orthodox, so they are still Christian.