Since no expert, say, with a geo.... or slo.... prefix has joined the debate (yet), I'll try a bit less professionally - more in an everyday way. In my opinion, somewhere in the times of Linhart, Vodnik, Prešeren and even Cankar and Župančič... the peak was named Pinkelj turn. But the name over decades started sounding somewhat old-fashioned, maybe too German, maybe some!? negative connotation and eventually with the development of the Slovenian language naturally ,,N,, got lost and ,,V,, appeared more. Of course the word Pivkelj sounds somewhat more sonorous, important, rich... and over time locals and others probably adopted it. Interestingly, the word ,,Pinkelj,, is still detected by the search engine in hunting topics on the division of hunting grounds, territories and similar in the Moravče area for which it is characteristic that they cling strongly to old names, the question is!? What is in the cadastre and still in daily use among locals. Probably or quite probably some expert would ,,tear me apart for what I spread,, but I think some truth is in my record... End, bottom line it doesn't matter Pinkelj or Pivkelj... the main thing is the peak is interesting. Lp