Where does “πρωτομαγιά” come from?

πρωτομαγιά (Greek) comes from Greek Μάιος, from Koine Greek Μάϊος, from Latin Māius, from Latin Maia, from Ancient Greek μαῖα, from Ancient Greek μήτηρ, from Proto-Hellenic mā́tēr, from Proto-Indo-European méh₂tēr — mother.

πρωτομαγιά (Greek): May 1st, May Day, International Workers' Day

Definitions

May 1st, May Day, International Workers' Day

Ancestry of “πρωτομαγιά”, step by step

πρωτομαγιά traces back through two separate lines of ancestry.

via Greek Μάιος

Step	Language	Word	Meaning
1	Greek	Μάιος	May
2	Koine Greek	Μάϊος	—
3	Latin	Māius	“month”}} of May
4	Latin	Maia	nominative feminine singular of Maius; nominative...
5	Ancient Greek	μαῖα	midwife; foster mother, nurse; good mother, dame
6	Ancient Greek	μήτηρ	mother; source or origin
7	Proto-Hellenic	mā́tēr	mother
8	Proto-Indo-European	méh₂tēr	mother

via Greek ιά

Step	Language	Word	Meaning
1	Greek	ιά	—

Every word from Proto-Indo-European méh₂tēr →Every word from Proto-Hellenic mā́tēr →Every word from Ancient Greek μήτηρ →