"the most common names are not typical of the Czech Republic as a whole, but rather are distinctive of Vlassko and surrounding areas. Second, many of these names are not Czech in origin but rather Romanian (Baca, Balcar, Sandera), Hungarian (e.g. Orsak), Slovakian (e.g. Fajkus)"

Balkar = Bolgár

Orsak = Aršak

Fajkus = Balkh, Vajk