Where does “Nancy” come from?

Nancy (French) comes from English Nancy, from English Agnes, from Ancient Greek Ἁγνή, from Ancient Greek ἁγνός, from Ancient Greek ἁγνεία, from Ancient Greek ᾰ̔γνός.

Ancestry of “Nancy”, step by step

Nancy traces back through two separate lines of ancestry.

via English Nancy

Step	Language	Word	Meaning
1	English	Nancy	An effeminate man, especially a homosexual
2	English	Agnes	—
3	Ancient Greek	Ἁγνή	pure, chaste
4	Ancient Greek	ἁγνός	pure, chaste; holy, sacred; purifying
5	Ancient Greek	ἁγνεία	purity, chastity; purification, cleansing
6	Ancient Greek	ᾰ̔γνός	—

via Latin Nanciacum

Step	Language	Word	Meaning
1	Latin	Nanciacum	—
2	Old High German	Nanzig	—
3	Late Latin	Nanciaco	—
4	Gaulish	*Nantiākom	—
5	Proto-Celtic	nantos	stream, river; valley

Words derived from “Nancy”

Nancéien
nancéien

Every word from Ancient Greek ᾰ̔γνός →Every word from Ancient Greek ἁγνεία →Every word from Ancient Greek ἁγνός →