My Slovenian ancestors were miners in N. Minnesota. But Slovenians settled in many other places too, and wherever they went, potica was sure to follow! My family recipe is similar to this, but a little easier (refrigerated yeast dough, uncooked nut filling) and probably richer (sour cream in dough, lots of honey.) http://slovenianroots.blogspot.com/2012/12/potica-step-by-step-guide-to-slovenian.html
My mother watched my dad's mother make this and wrote down the recipe as it was made, then tweaked it over the years. I still have her hand written recipe. My grandmother was originally from the Austrian/ Hungary border. She married my grandfather who was Croatian.