Where does “Потерашев” come from?

Потерашев (Bulgarian) comes from Romanian poteraș, from Romanian -aș, from Proto-Slavic -ašь.

Ancestry of “Потерашев”, step by step

StepLanguageWordMeaning
1Romanianpoterașmember of a posse
2Romanian-așdiminutive suffix
3Proto-Slavic-ašь—
Every word from Proto-Slavic -ašь →Every word from Romanian -aș →Every word from Romanian poteraș →