Thank you for this information. I actually visited the parish in Poronin about 17 years ago and managed to get some information then. The parish priest at the time was very nice and he looked up some information on his own and sent it to me months after I came back to the U.S. He is since gone from there.
I also received some information from Krakow and that put my research back to the beginning of the 1800s/end of the 1700s. I'd love to find out if there's any way to go back even further. It seems that the only way possibly would be to connect with some of the people still living there who share these surnames.
Regarding Kozak, thank you for that information as well. I've also been able to research this side and seem to have emigrated from Zubrzyca Dolna and the surrounding towns that were part of Slovakia until after WWI.