Laveol Even last name Kolisev is a Macedonian one Last names ending with ev ov are not Bulgarian It happens that you have those in Bulgaria But you have those last names in Macedonia Russia Check Republic and so on Kolisev is a Macedonian last name Same is Kolisevski You can find both kinds with ov ova ev eva vski vska ski ska and others in Republic of Macedonia So changing a last name from Kolisev to Kolisevski does not have any Bulgarian AntiBulgarian implications My last name is Janev You can find in Macedonia also Janevski Janeski All of those are Macedonian last names The fact that you can have Janev in Bulgaria does not translate to ethnicity origin claims in Macedonia Here are some last names that finish on ov ev and are not Bulgarian neither Macedonian Sergei Lavrov Anton Chekhov Martina Navratilova So these last name endings are typical but not exclusive for some of the Slavic languages Same is with vski vska ski ska ich which are shared between a number of Slavic languages To come back to Kolisevski Kolisevski is a Macedonian last name as well is Kolisev If you can find a person living in Bulgaria with one of those last names and probably you could not does not gives any conclusion about ethnicity or being a Pro Bulgarian