Where does “ⲁⲛⲧⲱⲛⲓ” come from?

ⲁⲛⲧⲱⲛⲓ (Coptic) comes from Latin antonius, from Ancient Greek Ἄντων.

Ancestry of “ⲁⲛⲧⲱⲛⲓ”, step by step

Step	Language	Word	Meaning
1	Latin	antonius	The name of a Roman gens, a "family name"
2	Ancient Greek	Ἄντων	—