'beside the Ister'), or Paradounabon/Paradounabis (Παραδούναβον / Παραδούναβις), which is preferred in official documents, was a Byzantine province covering the southern bank of the Lower Danube (Moesia Inferior) in the 11th and 12th centuries.

[3] In the aftermath of his victory over the Rus', Emperor John I Tzimiskes (r. 969–976) appointed general Leo Sarakenopoulos as commander over north-eastern Bulgaria, based at Pereyaslavets/Ioannopolis.

Sarakenopoulos and his subordinates engaged in major fortification activities in the region of the Dobruja over the next few years, where abandoned Roman-era forts were rebuilt and re-occupied.

The population was withdrawn to a few large fortified centres, and the Pechenegs were allowed to settle in the province as allies and colonists (termed mixobarbaroi by contemporary authors) and kept pacified through subsidies and through a vibrant trade.

It was not until the early 1070s that the Pechenegs launched an open rebellion, and posed a constant threat to the Byzantine Empire's Balkan provinces until decisively defeated at the Battle of Levounion in 1091.