I don't know how accurate some of the assumptions are from the private companies who provide these DNA tests. I am pondering having this done to break through a brick wall in my biological family. As far as I can tell, though it is not common, it *is* possible for those of eastern/southern European heritage to have the R1b Haplogroup. The Wiki article about the haplogroup mentions this:
"R1b is also present at lower frequencies throughout *Eastern Europe*, Western Asia, Central Asia, and parts of South Asia and North Africa. Due to European emigration it also reaches high frequencies in the Americas and Australia."
Note here that eastern Europe is mentioned first. I do not know the specifics, but I suspect it might have to do with the location of Slovenia/Croatia as a "crossroad" between Europe and Asia Minor (i.e. modern Turkey). The armies of the Ottoman Empire crossed into the Balkans many times as territory there (particularly in modern Serbia/Bosnia/Albania) changed hands in battles. In fact, the Battle of Vienna, where the Turks were narrowly defeated by various European forces, took place on 12 September 1683.
My thoughts here are just a theory, as I am not sure how accurately these haplogroups have been identified. It may be a lot like radiocarbon dating, that is, the farther back you attempt to establish a date with this method, the more margin for error you have.
I am not sure that all of the Palcic "clusters" are related. Jakov Palcic (Zagreb) puts forth the theory that the name originated in multiple places without going back to a common ancestor. This is possible, and part of me still clings to the hope of one common ancestor, but we need much more evidence to prove that this is true. I do know that the name shows up in records in coastal Croatia (aka Dalmatia) much earlier than in the Loz Valley.
OK, the rest we can share offsite, when you have a moment to write.