1) East Slavic tribe 
The Dulebs (Dulebes) or (more correctly) Dulebi (Дуле́бы, Дуліби) were one of the tribal unions of Early East Slavs between the 6th (still questionable) and the 10th centuries. Dulebi were among the twelve East Slavic tribes mentioned in the Primary Chronicle. (See the Dulo clan of Old Great Bulgaria.) Historians are still not sure of...