This is sort of a speculative half-answer. The |-ius| suffix usually means "son of..." If this is true for this name, it could mean "son of Antonus." The expected descendants of
that name would be
Antono, Antone &
Anton. These are said to be variants of
Antonius, but are more likely variants of its predecessor, like Julus vs.
Julius, etc.
Restated, "Antonus" may yield a better lead for this etymology.
"Like arrows in the hands of a warrior are sons born in one's youth." Ps. 127:4
JoHannah Jubilee, BenJudah Gabriel, Aaron Josiah, Jordan Uriah,
Maranatha Nissiah, (Anastasia Nike, 1992-1992), Jeshua David,
Shiloh Joshana, Elijah Daniel, Hezekiah Nathaniel, Zephaniah Joseph