The name of "Bač" (Bács) town itself is of uncertain origin and its existence was recorded among Vlachs, Slavs and Hungarians in the Middle Ages.
The centre, which had constituted the rearguard on the march, was commanded by Kontostephanos himself, and consisted of the imperial guards units, including the Varangians and Hetaireiai, units of Italian mercenaries from Lombardy (probably lancers) and a unit of 500 armored Serbian allied infantry, as well as the Vlach cavalry.
His father Goerge Nusha (Đorđe Nuša) was a well known grain merchant of Cincar (Aromanian or Vlach) origin who lost his wealth shortly after his son's birth and was forced to move the family to Semedria orSmederevo where young Alkibijad attended elementary school and first two grades of boarding school.
At the same time a large Sephardi Jewish emigrant community from the Iberian peninsula established itself in Thessaloniki, while there were population movements of Arvanites and Vlachs, who established communities in several parts of the Greek peninsula.
The Vlachs, a historically nomadic people who live throughout the Balkans, speak a language derived from Latin, and are the descendants of Roman settlers and Romanized indigenous peoples.
Their obligations are, however, clearly shown by the so-called "law of the Vlachs", found in the hrisov of Banja and in two of Czar Dusan's donations, those from Vranje and Prizren.
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In the hrisovs of Prizren, the obligations of the Vlachs within the Serbia, who were subjects to the king, are stated: each of them had to give each year, out of 50 sheep, one sheep with a lamb and a cow; and each second year a horse.
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Such laws or statutes were made at first for the Vlachs of the monasteries of Dusanovac (near Negotin,State: Bor), Studenica and Milosevo.
Though the Vlachs eventually lost their language, being linguistically assimilated, this migration contributed to the specific traditional culture and the establishment of the historic name of the region, "Wallachia" - see Moravian Wallachia.