Not too long ago I rescued a certain child from a dark fortress. It was business as usual until I returned him to his mother. The mother in question happened to be the queen of a dwarven nation, something the child failed to mention.
I had no way of knowing this child was royalty when I found him, but as he was reunited with the queen it occurred to me that if I had met him as a free dwarf I still wouldn't have known he was royalty. It's not the first time I've come across this little omission of information, either. When visiting the town's keep and the odd mead hall, I'll often find a seemingly-out-of-place child among a room full of colorfully titled humans. Only after an extensive interrogation will I find out just who the child is related to, when this should have been common knowledge to begin with.
In real life, a king's son is a big deal and as such is called a prince. In Dwarf Fortress, he's just another kid who's dad happens to be the ruler of the nation. That isn't fitting of nobility at all, they would want everyone to know just whose child that is.
Since nobles are succeeded by their children, shouldn't they be regarded as important? The noble's spouse receives a title, so why not give one to the kid who's going to replace them too? Something as simple " [POSITION_NAME]'s son/daughter" would make identification easier and prevent a bit of confusion.