Where does “Mitricoiu” come from?

Mitricoiu (Romanian) comes from Romanian Mitrică, from Romanian Dumitrică, from Romanian Dumitru, from Old Church Slavonic Дьмитръ, from Ancient Greek Δημήτριος, from Ancient Greek Δημήτηρ, from Ancient Greek μήτηρ, from Proto-Hellenic mā́tēr — mother.