The name Celestia is a girl's name of Latin origin meaning "heavenly". Celestia and is often added to lists like Best Cool Unusual Girls' Names and discussed in our forums with posts like "Themed Families..".
From the experts:
Celestia is a heavenly name that sounds more ethereal than Celeste, Celestia might make a distinctive, feminine choice if your taste runs toward names like Angelina and Seraphina.
Celestia was more popular than you might think in the late nineteenth century -- it made the popularity list six times in the 1880s. Celestia was the middle name of Caroline (Carrie) Ingalls in "Little House on the Prairie."