There are lot of other references like that, every kingdom law that you can pass is directly taken from our history, some of them are even labelled in latin, wich also doesn't exist in Calradia. There are also several more obscure like the Varangian Guard, the emperor being a military commander that rose to power, how the Calradians have an hatred for kings and stuff.. Everything is kinda an out of place reference to our history in this game
I get that citing directly Caesar and Marius might be a bit out of place but the whole plot of the game is a late Roman era themed thing, i don't get why two lines of historical reference bother you that much, especially in a world that's a sort of copy pasted from our history