Sounds rather standard to me. It depends what exactly was that name and in which period. For me, if the name is Slavic, but not ending in -ski, -cki, -tzki, then the person was rather Silesian. Also the occupation and religion matters. Germans were mostly protestant and had „better jobs”. Anyway, it depends, but I don’t see why a German person would use a Slavic surname. Given names were usually in German form, since this was the official language in the documents (earlier in Latin). The origin of a person could follow from the surname for people from before 1740, that is, before Prussia in Silesia. But it is hard to find so old documents.
Give some specific ancestor with known dates.
Rado
