Illumin: Callisto's father, the God of Light. He created both Callisto and her twin brother, Aelius, from his own Light without any partnering gods. Callisto adores her father, and has managed to draw out a less formal, even
silly side of the normally serious god.
Aelius: Callisto's brother, the God of the Sun! Best friend, and very very best to tease, pester, follow around, and watch adoringly.
Eibhilin: Illumin's head Aoide, Eibhilin guards Callisto and Aelius as closely as she would her own children, if she had any. She often ends up tending to the young ones, having a soft spot for such things.
The People of Solde-on-Palecliff: Solde-on-Palecliff is Light's stronghold, the town that surrounds Callisto's home at the Pharos Beacon. Nearly everyone in the town is a follower of Illumin, and as such they all adore His children, viewing them as precious gifts, something to be honored and also protected as ferociously. While they are not literal family, the people of Solde view the family of Light as their own.