Spelldon and Valentine would have a big family together
I feel like Spelldon was alone a lot of his childhood on Aeaea when his mother would spend one-on-one time with Casta, so he'd want a big family so nobody would ever be lonely. He appreciates privacy and alone time, but he wanted to make sure that every time someone needed to talk, there was someone there to listen
After Val was Turned, it was mostly just him and his mom in a boring, monotonous Vampire Court. And after they left, it was a big, empty house--and one of them was always gone, and they never talk to each other. He would want a big family so that the house was always loud and alive, and so that he was always busy with something or other