Axelthorn, Novgorod, Kiev, Vladimir etc were independant Russian principalities just as Castille, Aragon were. The Russian faction should be split into separate factions. Since you're Romanian I won't argue about Vlad Tepes but I think he was around in the 1400's. Timur-I-lenk was around in the late 1300-early1400's so would fit into the game fine.