
'Wir' is just the title for those with royal blood. You can be nobility without being royalty, and I would strongly encourage anyone not to give their character a royal bloodline, because that's verging too far into special snowflake territory for most people's liking. As Yssen mentioned, the titles seem to be focused on your character's role within the Empire itself rather than their lineage. Basically, your title tells what you character can do for the Empire. Garlemald is very focused on their military and the progress of their country. So for choosing your character's title, I'd recommend just figuring out what job your character would actually hold within Garlemald. In the event he just sits around as the heir to a noble family, I'd imagine he would not have a high title or much respect, because with what we know of Garlemald, I would not be surprised if they value military success and aiding Garlemald more highly than anyone's heredity.