Proper noun
Duklja
A medieval state with hereditary lands roughly encompassing present-day southeastern Montenegro.
This lasted until later in the century when some parts of Bosnia are briefly incorporated into Croatia and others into Duklja from which the latter Bosnia appears to have seceded in about 1101, upon which Bosnia's bans tried to rule for themselves. Source: Internet
Rozen, p. 43. The presbyter of Duklja also marked the event: "By that time among the Bulgarian people rose one Samuel, who proclaimed himself emperor. Source: Internet