Where does “Nazianzo” come from?

Nazianzo (Portuguese) comes from Latin nazianzus, from Ancient Greek Ναζιανζός.

Ancestry of “Nazianzo”, step by step

Step	Language	Word	Meaning
1	Latin	nazianzus	—
2	Ancient Greek	Ναζιανζός	—

Nazianzo — Etymology, Origin & Word History | Etymology Explorer