Every Monday we will post an entry that hasn’t yet been published with a view towards harnessing the collective onomastic power of the internet. If you have any thoughts about the name’s origin, other variants it might be related to, other examples of its use, etc., please share them in the comments! If you wish to browse other Mystery Monday names, there is an index.
Today we’re looking at a pair of names, because given where they are both found, and the similarity in their sound/spelling, we’re wondering if they aren’t perhaps related.
So we’ve got two examples, both from 13th C Poland, both recorded in Latin, both masculine nominative; one Zira, one Ziros. Neither of these is in a usual masculine Latin nominative format, which is a strong clue that both names are not native Latin names, and thus we should (or at least, could) look for Slavic roots. Given that neither was Latinized in the expected way (Zirus), this makes us think that the name which is being both of these instances is possibly the same name, one which does not lend itself to Latinization well, so whatever scribe is rendering it must take a stab at Latinizing it himself.
Now, the -os ending smacks very strongly of Greek declensions, which is one possible route into the Slavic name pool; however, Ziros is not itself an immediately identifiable Greek personal name — though it is the name of a lake (and of a newly formed municipality that takes its name from the lake). So that doesn’t help us very much.
Stretching out further afar, and quite a bit more tangentially, there is a modern Armenian masculine name Ժիրայր, which has a nickname Ժիրո or Žiro. Could this be related?
We’d love to know your thoughts, especially if you’ve got more expertise in Slavic names than we (currently) have!