Birds of a feather fly together. Our ancestors married within same region, religion [few exceptions} but for sure common language to communicate in and common tradition to observe.
The church record you provided is in Latin and Roman alphabet and nicely handwritten. It sure would be much more difficult to decipher if the record was in Cyrillic.
I want to say those are the godparents names.www.bmi.net/jjaso http://homepages.bmi.net/jjaso/Latin_Terms_and_Phrases.htmlwww.torugg.orgwww.infoukes.com/genealogy