Postumus

Roman praenomen, or given name, which meant "last" in Latin, postumus being the superlative of posterus meaning "next". It was sometimes given to children born after the death of their father. It was also a nomen and cognomen. A notable bearer was the Roman commander Marcus Cassianius Latinius Postumus, usually known simply as Postumus, who established the breakaway Gallic Empire in the 3rd century.