Tribunus is Latin for Tribune (I think), although it is not as simple to say as Tribune Lucii. By the way, Maurizio, how do you pronounce Lucii? After learning that the letter "C" in Latin is pronounced hard as in "K," I usually called it Tribune "Loo-kee." Is that the way you say it, or is it Tribune "Loo-shee?"
By the way, if it is possible, try to revert it back to Tribune Lucii.
Live long and prosper.