www.familysearch.kemos has no reference to any foreign born folks in the KEMOS family. Did a bit more search and it shows up as a Turkish name, but rarely with Christian given names (Alexandra, Timothy, etc.).
I'm going to guess these bad boys are actually BULGARIAN ROMA ~ Orthodox religion and Turkish surname ~ from the border region.
This is a pretty highbrow scam though.
'Kemos' sounds more Greek than Bulgarian.