Antonij / Anton / Antoni / Anthony / Antonio

Antonij is a Slavic variant of the Roman family name Antonius. The Antonius gens was a prominent patrician family in ancient Rome, and its most famous member was Mark Antony, the Roman politician and general. The etymology of Antonius is debated, but the most widely accepted theory links it to the Greek word 'anthos' (flower) or 'anteo' (to meet, to confront), though the meaning 'priceless' or 'inestimable' is also commonly associated with it through folk etymology and later interpretations. The name spread throughout Europe with the expansion of the Roman Empire and later through Christian veneration of various saints named Antonius.

In Slavic cultures, the name adapted to local phonetic rules, resulting in forms like Anton, Antoni, and Antonij. The 'ij' ending is characteristic of South Slavic languages, particularly Serbian, Croatian, and Macedonian, and also appears in some East Slavic contexts. The name has maintained a consistent presence in these regions for centuries, often associated with religious figures and historical personalities, contributing to its enduring popularity.