Dulebs

The Dulebs (Dulebes) or (more correctly) Dulebi (Russian: Дуле́бы, Ukrainian: Дуліби) were one of the tribal unions of Early East Slavs between the 6th (still questionable) and the 10th centuries. Very little is known of them, with the main source being a handful of mentions in the Primary Chronicle.

The Chronicle describes them as a tribe that formerly lived along the Bug River, in what is today western Ukraine.

Some medieval sources also mention the Dulebs' presence in Western Volhynia, today's Czech Republic, Middle Danube, between Lake Balaton and the Mursa River (Drava).

According to the Primary Chronicle, the Dulebi suffered greatly from the invasion of the Avars in the late 6th - early 7th century. In 907, the Dulebian unit took part in Oleg's military campaign against Czargrad (Constantinople).

The Dulebs and their ruler were also mentioned in one of the works of an Arab geographer Al-Masudi.

It appears that the Dulebi tribal union disintegrated in the 10th century, assimilated with the Volhynians and Buzhans and became part of the Kievan Rus'.

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