Kastor Name Meaning

The name Kastor, more commonly spelled as Castor, is of Greek origin. In Greek mythology, Castor was the son of Zeus and the twin brother of Pollux. The twins are known as the Dioscuri. The name Kastor itself means "beaver" in Ancient Greek, but it's not commonly used in this context.

Castor and Pollux, as per the myth, were granted shared immortality by Zeus. When one died, the other offered to share his immortality with his twin and thus they spend alternate days on Olympus (home of the Gods) and in Hades (the underworld).