Oh! I've been doing a challenge like this for a while, but a bit different. My starting sim was a female named Anora Mellark, the princess, and she married a man named Sebastian Cheyenne. I built a castle for them, and soon they had twin girls named Emmaline and Sierra. In my challenge, there are three floors to the castle. The first floor is the servant quarters, kitchen, living room, etc. The second floor is the boys/heirs room and the king and queens living space. The third floor is the girls nursery and extra rooms. Currently we have teenage Sierra and Emmaline, twin boys who are children named Nathan and Ryan. I'm planning on Nathan or Ryan to become the heirs. Anora had an affair with a vampire, and gave birth recently to twin girls Jenny and Angel. I still don't know if they're vampires or not, but I will find out soon