Where does “Dumitrean” come from?

Dumitrean (Romanian) comes from Romanian Dumitru, from Old Church Slavonic Дьмитръ, from Ancient Greek Δημήτριος, from Ancient Greek Δημήτηρ, from Ancient Greek μήτηρ, from Proto-Hellenic mā́tēr, from Proto-Indo-European méh₂tēr — mother.

Ancestry of “Dumitrean”, step by step

Step	Language	Word	Meaning
1	Romanian	Dumitru	—
2	Old Church Slavonic	Дьмитръ	—
3	Ancient Greek	Δημήτριος	—
4	Ancient Greek	Δημήτηρ	Demeter
5	Ancient Greek	μήτηρ	mother; source or origin
6	Proto-Hellenic	mā́tēr	mother
7	Proto-Indo-European	méh₂tēr	mother

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