Antoinio is of Spanish and Italian origin, meaning 'priceless' or 'invaluable'. It is derived from the Latin word 'Antoniinus', which was a popular name among Roman emperors and their families during ancient times. The name has been widely used in various forms across different cultures, including Antoine in France, Antonio in Spain and Portugal, Antony in England, and Anton in Germany and Scandinavia.
"Antonio was a popular name for newborns between 1977 and 2002, with peaks in popularity during the late 1980s and early 1990s."