Nyora kuenderera mberi kweiyi ndima - Vanyori venguva iyoyo veByzantine vanomuti kana muSerb kana kuti Dukljan ("Βοϊσθλάβος ὁ Διοκλητιανός"), asi usataure nezvedzinza rake, nepo "Chronicle yeMupristi weDuklja", yakazotevera, isina chokwadi, inomuti muzukuru wemutongi wekare Jovan Vladimir (r. 990-1016). Hwakanga hwasvika pakakwirira zvikurusa mukati mokutonga kwenguva refu kwamambo Basil II, umambo hweByzantium hwakapinda mukuderera kunopfuurira pashure porufu rwake muna 1025. Ikoku kwakanga kuri pachena zvikurukuru muBalkans, uko kubviswa kwokutyisidzira kwechiBulgaria kusingagumi kwakabatanidzwa negadziriro yemitero isinganzwisisiki kwakabetsera kukurudzira masangano okusunungura. Vojislav the Dukljan akabata zita re "archon", uye "toparch" yeDalmatian "kastra" yeZeta neDombo " ((<unk>ν δὲ εἰς τὰ κάστρα Δαλματίας εἰς τὴν Ζένταν καὶ εἰς τὴν Στάμνον τοπάρχης Βοϊσθλάβος ὁ Διοκλητιανός)".Zvinhu zvevaDalmatians, maCroats, maSerb nevamwe zvaitariswa ne "strategoi" muNiš, Skopje, Ragusa (Dubrovnik) uye Dyrrhachium. Vojislav aiva nemisangano yenguva dzose neKatakalon Klazomenites (Catacalon), strategos weRagusa, uye pane imwe nguva, akamubata pamwe neboka rake nokuti Vojislav aida kuti ave godfather kumwanakomana wake Katakalon pakubhabhatidzwa kwake. Izvi zvinoratidza ukama hwapedyo pakati pevatungamiriri vomunzvimbomo nevakuru vakuru veByzantium munharaunda iri pedyo yoUmambo pashure pe"kukundazve" kwaBasil
.