Where does “Petcoiu” come from?

Petcoiu (Romanian) comes from Romanian Petcu, from Bulgarian Петко, from Bulgarian Пе́тър, from Old Church Slavonic Петръ.

Ancestry of “Petcoiu”, step by step

StepLanguageWordMeaning
1RomanianPetcu—
2BulgarianПетко—
3BulgarianПе́тър—
4Old Church SlavonicПетръ—
Every word from Old Church Slavonic Петръ →Every word from Bulgarian Пе́тър →Every word from Bulgarian Петко →