Where does “Cecílio” come from?

Cecílio (Portuguese) comes from Latin Caecilius, from Latin caeculus, from Latin caecus, from Proto-Italic kaikos, from Proto-Indo-European *kéh₂ikos.

Ancestry of “Cecílio”, step by step

Step	Language	Word	Meaning
1	Latin	Caecilius	—
2	Latin	caeculus	—
3	Latin	caecus	blind; invisible
4	Proto-Italic	kaikos	blind
5	Proto-Indo-European	*kéh₂ikos	—

Every word from Proto-Indo-European *kéh₂ikos →