Where does “Poșteanu” come from?

Poșteanu (Romanian) comes from Romanian poștă, from French poster, from English poster, from English -er, from Middle English -er, from Old French -er, from Latin -āre, from Proto-Italic -āō — he, she.

Ancestry of “Poșteanu”, step by step

StepLanguageWordMeaning
1Romanianpoștăpost
2FrenchposterTo post, mail; To post; poster
3EnglishposterA picture of a celebrity, an event etc., intended...
4English-erA person or thing that does an action indicated...
5Middle English-eragentive suffix; agent noun suffix
6Old French-erAlternative form of -ier, verbal suffix;...
7Latin-ārefirst conjugation
8Proto-Italic-āōForms primarily denominative verbs
9Proto-Indo-European-eh₂yétiCreates iterative/ frequentative/ intensive...
10Proto-Indo-European-yétiCreates intransitive, often deponent,...
11Proto-Indo-Europeanyé-
12Chichewaiyehe, she
Every word from Chichewa iyeEvery word from English -erEvery word from Proto-Indo-European -yéti