Charlotte is the French feminine form of Charles, itself from a Germanic root often given as "free man" or "strength." Over time the diminutive form softened the association toward something more delicate, and the name is now commonly linked with a blend of gentleness and quiet resolve rather than raw power.
You can address Mercury on the empty signs while the Moon can be addressed on both positions indistinctively. - Picatrix (Andalusia, ~1000.AD)