Social rank and social title is something that, I'm pretty happy to say, our Freelander characters seem to be especially mindful of, with no lack of "Your Grace" and the proper use of titles when and as needed. Obviously there are private scenes where such forms of address go out of the window, but usually, in public, such decorum is upheld. To put it in a nutshell: We salute the rank, not the person. Ergo: Baroness Dianna Lomasa should refer to Duke Norran Lomasa as "Duke Lomasa" or "Lord Norran" until such time as an informal level of relationship has been established.