Rubuta ci gaba don wannan sakin layi - A cewar tarihin Niketas Choniates, "Vlachs, waɗanda suka ji jita-jita" na tserewa na Andronikos Komnenus (dan uwan ɗan'uwan ɗan'uwan Byzantine Emperor Manuel I), ya kama shi a 1164 a kan iyakokin Halych. Choniates ya ba da rahoton cewa Vlachs, Slavs da Cumans suma sun zauna a ƙasashen da ke tsakanin Carpathians da Lower Danube, kuma haɗin gwiwar Vlachs tare da Cumans a kan Daular Byzantine an rubuta shi sosai. A cewar Anna Comnena, Vlachs na gida sun nuna "hanyar ta hanyar wucewa" na tsaunukan Balkan ga Cumans waɗanda suka mamaye ƙasashen Byzantine a kudancin Lower Danube a 1094. Peter da Asen, shugabannin tawayen 1186 na Bulgarians da Vlachs
a kan mulkin Byzantine, ya ƙetare ƙananan Danube don neman taimako daga Cumans a lokacin rani na 1186 kuma ya dawo "tare da mataimakan Cuman" don ci gaba da gwagwarmaya. "Cumans, tare da wani ɓangare na Vlachs, suka haye" ƙananan Danube kuma suka mamaye Thrace a 1199.