Octavio
Octavio is the Spanish form of Octavius, a Latin name derived from the number "eight." In Roman times, number names were common, there were ones for every number up to 10:
Primo
Secundus
Tertius
Quartus
Quintus
Sextus
Septimus
Octavius
Nonus
Decimus
See Also: Tertius, Tavian