Where does “Κλειώ” come from?

Κλειώ (Ancient Greek) comes from Ancient Greek κλέω, from Proto-Indo-European ḱlew-, from Proto-Indo-European ḱel- — to cover; to incline.

Ancestry of “Κλειώ”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	κλέω	to tell of, make famous, celebrate; Alternative...
2	Proto-Indo-European	ḱlew-	to hear
3	Proto-Indo-European	ḱel-	to cover; to incline

Κλειώ — Etymology, Origin & Word History | Etymology Explorer