Caspian
[ˈkæspiən]Meaning
an English given name, probably based on the Caspian Sea
Background Story
C. S. Lewis used Caspian for a character in his Chronicles of Narnia series, first appearing in 1950. The name was probably based on the Caspian Sea, which was named for the city of Qazvin, itself named for the ancient Cas tribe.

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