Where does “Agnès” come from?

Agnès (French) comes from Latin Agnes, from Ancient Greek Ἁγνή, from Ancient Greek ἁγνός, from Ancient Greek ἁγνεία, from Ancient Greek ᾰ̔γνός.

Ancestry of “Agnès”, step by step

Step	Language	Word	Meaning
1	Latin	Agnes	—
2	Ancient Greek	Ἁγνή	pure, chaste
3	Ancient Greek	ἁγνός	pure, chaste; holy, sacred; purifying
4	Ancient Greek	ἁγνεία	purity, chastity; purification, cleansing
5	Ancient Greek	ᾰ̔γνός	—