The name Sebastion means Venerable and is of Greek origin. Sebastion is a name that's been used primarily by parents who are considering baby names for boys.
The name Sebastian is derived from the Latin Sebastianus, which was used for a man from the area of Sebaste. Sebaste was a common placename in ancient Greece , being the equivalent (feminine) of the Latin Augusta. Towns named Sebaste were named to honor Augustus or a later Roman emperor.
Common nicknames include Seb, Bas, Bash, and Sebby/Sebbie. The popularity of the name increased with the telling of the Biblical story of Saint Sebastian.
Famous Sebastians include actor Sebastian Cabot, Johann Sebastian Bach, composer, and Sebastian Coe an athlete who became a member of the British Parliament. Sebastian Faulks is a British author.
Saint Sebastian was a 3rd-century Roman soldier martyred during the persecutions of the emperor Diocletian.
One of the most famous fictional Sebastians is the crab from Disney's The Little Mermaid, whose full name is Horatio Thelonious Ignacious Crutaceous Sebastian. Lord Sebastian is from the television show, Brideshead Revisited and Colonel Sebastian Moran is a character in the Sherlock Holmes series of stories by Sir Arthur Conan Doyle. Sebastian Monroe is a fictional president in the TV show Revolution.