Greeks of Romania

There has been a Greek presence in Romania for at least 27 centuries. At times, as during the Phanariote era, this presence has amounted to hegemony; at other times (including the present), the Greeks have simply been one among the many ethnic minorities in Romania.

The Greek presence in what is now Romania dates back as far as the apoikiai (colonies) and emporia (trade stations) founded in and around Dobruja (see Colonies in antiquity and Pontic Greeks), beginning in the 7th century BC. Starting with the Milesian colony at Istros, the process reached its height after Tomis was founded in the 5th century BC. Although forever subject to the Dacian interference and easily disrupted by changes in the politics of neighbour tribal chieftains, the colonies prospered until being briefly submitted in various forms by King Burebista (late 1st century BC). Immediately after, and for the following centuries, they were stripped of their privileges by their new Roman masters, and followed the Empire into its crises.

In the Middle Ages, the Greek-speaking Byzantine Empire was a living presence north of the Danube, maintaining a cultural hegemony over the lands virtually until its disappearance, and for long periods exercised actual political dominance in the area of modern Dobruja (known to the Byzantines as Scythia Minor).

After the fall of the Byzantine Empire to the Ottoman Empire, the Hospodars of Moldavia and Wallachia (the Danubian Principalities) often took on the patronage of many Greek-proper cultural institutions such as several monasteries on Mount Athos, gestures guaranteed to provide prestige within Eastern Orthodox culture. To this was added the exodus of Byzantine officials and commoners to the two countries, which were at the time under a rather relaxed Ottoman tutelage. They took opportunities to advance in office, and from early on included themselves in the inner circle of power. This meant not only the reliance of Princes on a new elite (more often than not, also one to provide it with the funds needed by the administrative effort), but also the gradual ascendancy of Greeks to the thrones themselves.

...
Wikipedia