Caesars work about the wars in Gallia is called “Bellum Gallicum”, incidentally. I don’t r-e-a-l-l-y know much latin, though, I just cheat 
And suddenly this thread has gone totally off-topic %|I do think, linguistically speaking that the term ‘duke’ actually stems from ‘dux’ , since a duke in France was originally a military designation.
Uh…bellorum…bell-o’-rum…
This was a quickie!
Damn some else already did it!
oh well, another Bell ‘O’ Rum 
