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 — one-eyed, blind.

Ancestry of “Cecílio”, step by step

StepLanguageWordMeaning
1LatinCaeciliusThe name of a Roman gens
2LatincaeculusThe mythical son of Vulcanus and founder of Praeneste
3Latincaecusblind; invisible
4Proto-Italickaikosblind
5Proto-Indo-European*kéh₂ikosone-eyed, blind
Every word from Proto-Indo-European *kéh₂ikos →Every word from Proto-Italic kaikos →Every word from Latin caecus →