Caelus

In Roman mythology, Caelus was the god of the sky prior to Jupiter. It's one of the few names that's virtually one-of-a-kind yet fits in with current stylish choices such as Caius and Callum (neither of which Caelus is etymologically related to).

Pronounced KY-lus.

As of October 2026, Caelus ranked #8364 in US births in 2025 SSA, peaked at #6876 in 2024.