I used a random map generator XD

And whether or not someone has heard of you depends upon your Reputation. In fact, its why Nobility gives you a bonus to your reputation. If you do wear your regalia though, then someone may also recognize that on a Knowledge Roll. If you don't wear the regalia then it would just be based upon your Reputation. To recognize someone on reputation you must make a Knowledge Roll that has a DL equal to 40 - their reputation. So for instance, your Reputation is 5. Someone would have to get a 35 on a Knowledge Roll to recognize you. 

Your family may not be all that well known, but yes you will be recognized by the more well informed, especially if you wear your Regalia (which is a much easier knowledge roll to recognize then the DL for your Reputation)

Also in Calgeth... they don't really show loyalty to the king and queen and since this isn't your land... I would say nobility probably treated the same as anyone else (although some might pay more attention to you because of it. It just depends on the person, but you won't be treated like shit if that is what you are wondering. Won't be treated like a noble either XD)

[url=http://sta.sh/01ako9tbe5iw] (should be a zoomed in map)