The Ciobanu actually comes from the Turkish Cioban
And tattoo actually comes from Samoan,Facebook from American English,etc.
Turkish coban was also borrowed in all the Balkan languages,Polish,Hungarian, Ukrainian or Russian.
In Romanian it also has the typical pejorative, depreciative ,connotation, "a backward man", most certainly brought with the people of the Phanariote rule.
The origin of this sense comes from Constantinople,either Anatolian Greek or Turkish, it is about the " provincial,backward,people, that don't have access to civilization ".
It was an insult word used by the Anatolian Greeks towards the people from Greece,they call them "shepherds,vlachs",to be precise,Michael O'Sullivan,"The Greek Interwar Refugee Crisis...", pg.52, note 21.
The pejorative sense of the shepherd is not something new,see the Southern Italian song " U Pecuraru",that I've posted on this thread,however,in the Ottoman Empire this could also have been a cheap rhetoric, perhaps even regret ,because these were marginal people that couldn't be effectively controlled by the state,plus,since the Turks eat especially sheep meat,they were useful,tolerated, somehow.