Where does “Egídio” come from?

Egídio (Portuguese) comes from Latin Aegidius, from Latin Aegis, from Ancient Greek αἰγίς, from Ancient Greek αἴξ, from Proto-Indo-European h₂eyǵ- — goat; oak.

Ancestry of “Egídio”, step by step

Step	Language	Word	Meaning
1	Latin	Aegidius	—
2	Latin	Aegis	the aegis, or shield. See Aegis; αἰγίς
3	Ancient Greek	αἰγίς	the aegis; a shield of Zeus or cloak of Athena; a...
4	Ancient Greek	αἴξ	goat; a kind of waterfowl, possibly a goose; "In...
5	Proto-Indo-European	h₂eyǵ-	goat; oak

Every word from Proto-Indo-European h₂eyǵ- →Every word from Ancient Greek αἴξ →Every word from Ancient Greek αἰγίς →