At this time I do not know the answer to your post, but I did notice that you are looking for the Kovarik and Rozboril families... I am working on my husband's family genealogy, and he has both Rozboril and Kovarik families who are directly related to him. These families are from Gbely, and immigrated to Binghamton, New York - where many still live.
Please feel free to email me, and I will be happy to share what info I have! :-)