Where does “Cirilo” come from?

Cirilo (Portuguese) comes from Late Latin Cyrillus, from Ancient Greek Κύριλλος, from Ancient Greek κῡ́ριος.

Ancestry of “Cirilo”, step by step

Step	Language	Word	Meaning
1	Late Latin	Cyrillus	—
2	Ancient Greek	Κύριλλος	—
3	Ancient Greek	κῡ́ριος	—

Cirilo — Etymology, Origin & Word History | Etymology Explorer