I don't think the barn name has to go with the registered name... my TB mare is registered as "Susan's B." (ick) but I call her Jersey... they named her when she came to our barn, i'm not sure if they changed it or just didn't know it.
I can't imagine calling her "sue" or "susie" O.o and I never bothered to change it, since we just trail ride.
Now my arab's name is Luna of Windy Acres (ewww..) I want to change that, since we will be during endurance races and shows in a year or so, but I would like to encorperate Luna into it.
I really like "Kiss my Cash" and "cash me some Class" :)
Its funny how people come up with goofy horse names O.o "No smokin' roan" for a non-roan horse? LOL!