Where does “Alcíone” come from?

Alcíone (Portuguese) comes from Latin Alcyonē, from Ancient Greek Ἀλκυόνη, from Ancient Greek ἀλκυών — kingfisher, halcyon.

Ancestry of “Alcíone”, step by step

Step	Language	Word	Meaning
1	Latin	Alcyonē	—
2	Ancient Greek	Ἀλκυόνη	—
3	Ancient Greek	ἀλκυών	kingfisher, halcyon

Alcíone — Etymology, Origin & Word History | Etymology Explorer