In Ukrainian death records, are parents of minors sometimes only listed by their last names?
In indexing death records from L'viv, Ukraine, I have come across a batch that, after doing many name searches, seems to have the parents of deceased minors possibly listed by their surnames only. I have been working on this project for months, and this is the first time I have seen this possible recording system. I do not speak Polish, Ukrainian, nor Russian, so I often do internet searches for names to confirm I am reading them correctly. In this batch, many parental names seemed to come up as surnames, and rarely first names.
Antoni syn [son]
Jewdokia corka [daughter]
In the same batch, it has some children who seem to be listed under only a single parent:
Irzy syn [son]
Jedrzeia Cwyka [a mother's first and last name, presumably]
Therefore, I cannot be sure if in this community, last names were very commonly used as first names, or if in entries where the child had two listed parents, only their surnames were listed. If that is, in fact, the case, then should I presume that the father's surname would be the first listed, and is therefore the child's surname?
eg, Antoni Hrycia and Jewdokia Jedrucka (see above examples)
Thank you for your help!