I’ll put a family tree here when I can be bothered.
The current royal family is King Harse and his wife Julianne. They have three children, the oldest of which is a twenty year old man named Fulster. The younger two are ten year old twins, one boy and one girl. They are named John and Felmi respectively.
Fulster is in training as a military commander.
Although not strictly part of the royal family, the King’s adviser Gulder is a good friend to the family. He invests a lot of time into the running of the Academy of Sciences.